Name: Omega Seamaster 300 (Heritage) 41 234.30.41.21.01.001
Brand: Omega
SKU: 234.30.41.21.01.001

The Seamaster 300 Heritage 41mm is Omega's modern interpretation of the 1957 CK 2913, sized up from the 39mm trilogy reference to give collectors a more wearable daily driver without sacrificing the period-correct details that make this line worth owning. Broad arrow hands, lollipop seconds, and a sector dial that reads like a proper tool watch make it one of the more honest vintage-inspired pieces in Omega's current catalog. The 15,000-gauss anti-magnetic rating via the Master Chronometer 8912 is a genuine functional upgrade, not a marketing footnote.

What it is

Omega launched the Seamaster 300 Heritage line in 2014 as part of the 1957 trilogy alongside the Railmaster and Speedmaster '57, with the first Heritage pieces in 39mm. The 41mm variant, ref. 234.30.41.21.01.001, arrived in the 2021 refresh with the co-axial Master Chronometer caliber 8912, replacing earlier movements across the Heritage range. The 8912 is a Naiad-crown-locked crown variant of the 8900 family, certified to METAS standards for magnetic resistance and accuracy.

Key design notes: aluminum bezel insert rather than ceramic, black dial with applied indices, and NATO strap as standard configuration. No lug holes in early references, which limits third-party strap options compared to the later bracelet variants.

Buying notes

The aluminum bezel insert scratches readily; inspect under good lighting for gouges and fading, particularly on the numerals at 3, 6, and 9. The sector dial's applied indices can show adhesive ghosting if the watch has been exposed to heat or humidity, so check each index with a loupe for lifting at the edges. Crown seals on the Naiad-lock system are durable but worth confirming on any pre-owned example, especially if the watch has dive history; ask for any water resistance test documentation.

The NATO strap hardware can wear the case back finish quickly, so look for strap-drag marks on case back corners as a signal the watch has been worn frequently and may have mileage the seller is downplaying. Confirm the METAS certification card and box set are present, as Omega issued complete documentation with these from new.

Market read

The 234.30.41.21.01.001 trades near retail on the secondary market, generally $4,000 to $4,800 USD for clean examples with box and papers. The bracelet variants of the Heritage line command a modest premium over NATO-only configurations because they are more versatile and harder to find in unworn condition. Black dial steel references move faster than any special editions in this reference family.

Omega's heavy retail presence keeps a ceiling on appreciation, so buy this because you want to wear it, not to flip it.

Service expectations

The caliber 8912 carries a recommended service interval of 5 to 8 years under normal wear conditions. Omega charges approximately $600 to $900 USD for a full service at an authorized service center, which includes movement overhaul, seal replacement, and water resistance testing. Independent watchmakers familiar with co-axial escapements can service the 8912, though finding one with METAS recertification capability requires going back to Omega if you want the certification restored after service.

Editorial copy is AI-drafted from primary sources and reviewed by Grail Atlas before publication. Where the text is uncertain about a fact, it says so. Email corrections@grailatlas.com if something reads wrong. Signals on this page (community, OSINT) are clearly separated from the editorial sections.

Mass-produced#3 in familyOfficial press photos

Dial variants

Broad arrow dial1957 to 1963 (vintage original); 2014 reissueUncommonSought

Broad arrow hands (wider, military-style arrowhead on hour hand)
Lollipop seconds hand instead of standard baton
Strong contrast matte black dial with large applied indices
Heritage reissue retains the vintage layout faithfully

The broad arrow configuration is the collector-preferred expression of the Seamaster 300. The 2014 Heritage reissue and the 2017 60th Anniversary editions are modern references that reproduce this dial honestly without trying to pass as genuine vintage.

Non-broad arrow standard dial1964 to 1967UncommonStandard

Standard baton hour hand (no broad arrow)
Standard seconds hand, not lollipop
Otherwise shares the large applied indices and strong contrast

Omega shifted from the broad arrow to standard hands on later vintage Seamaster 300 production. The non-broad arrow examples are less sought but represent genuine vintage pieces at a lower entry point.

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In-house manufacture caliber · caliber Omega Cal. 8912: Co-Axial Master Chronometer automatic, 25,200bph, 60h PR, 38j; METAS-certified, anti-magnetic to 15,000 gauss · 60h power reserve (2.5 days)

Medium-large: suits wrists 6.5 in+ (16.5 cm+)

41 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

The lollipop seconds hand is the single most important authentication point on the Seamaster 300 Heritage; any example with a standard baton seconds hand has the wrong hand set.

Known issues in the market

Lollipop seconds hand substitution with a standard baton hand is the most common deviation on unscrupulous sales.
The radial brushed "tropical-style" dial has very specific sector lines; counterfeit dials use printed rather than brushed sectors.
METAS certification is mandatory on Cal. 8912; any example without the METAS caseback stamp is not a genuine 2014-generation watch.

Area	What to check	What is correct	Red flag
hands	Seconds hand profile	Lollipop seconds hand with circular tip, correct to the 1957-era design language	Standard baton or lance-shaped seconds hand; any seconds hand without the circular lollipop tip
caseback	METAS certification stamp	METAS logo engraved on caseback alongside Master Chronometer designation	No METAS stamp; caseback showing only COSC chronometer certification without METAS
dial	Sector brushing	Radial brushed sectors with crisp transitions between each sector, consistent depth	Printed sector lines, flat under raking light, or sectors with inconsistent depth

Common legitimate replacements

Hand sets are the most replaced component; confirm lollipop seconds hand is Omega-signed or period-correct.
Straps on vintage-inspired Omega models are frequently replaced with non-Omega aftermarket options; original Omega strap confirms unmodified condition.

Expert resources: Omega.com Seamaster 300 Heritage product documentation. OmegaMuseum.org for 1957 original reference comparison.

Authentication guide

Last reviewed June 2026

The Seamaster 300 Heritage is immediately identified by its "lollipop" seconds hand and "broad arrow" hour and minute hands. Both are direct references to the 1957 CK 2913. A standard pointed seconds hand or non-broad-arrow hands indicate the hands are not original.

Known reproduction risks

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LOW

Confusion with Seamaster 300m Professional (Diver 300m)

The Diver 300m has a different case shape, different hands, and no broad arrow design -- it is a completely different reference family
The Seamaster 300 Heritage has more restrained, vintage-inspired proportions compared to the contemporary Diver 300m

This is more frequent as an honest confusion than a deliberate misrepresentation. Verify the model name on the dial -- "Seamaster" text alone is not sufficient to identify the reference.

LOW

Non-original lollipop seconds hand substitution

Pointed seconds hand where a circular disc should be
Disc present but lume color or disc size does not match the OEM specification

Dial variants by era

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Era	Description	Identifiers
2014 to present	Black dial with warm beige lume that evokes the aged tritium of the 1957 original. The lume tone is deliberately vintage-inspired, not a defect. Grey and olive green variants are also produced. The Seamaster wave decoration at 6 o'clock is present on all versions.	Lollipop seconds hand: a circular disc at the tip rather than a pointed terminus Broad arrow hour and minute hands: wide triangular-tipped hands used on military-specification watches Warm beige/ivory lume on indices and hands -- designed to read as period-correct "Seamaster" text at 12 with wave decoration at 6 Unidirectional rotating bezel with black aluminum insert (not ceramic on base models) "300 m / 1000 ft" depth rating on bezel or dial
2018 to present (specialty colorways)	Grey-dial and olive green variants introduced alongside the standard black, targeting military-watch collectors. Bronze-case variant released 2019 with warm-toned dial and aged-look lume.	Grey dial shows the same Broad Arrow and lollipop hands but with a lighter base color Olive green dial evokes military-field watch styling; paired with NATO strap at retail Bronze case variant has a warm brown/copper tone that darkens with wear; caseback is stainless steel All specialty colorways use the same cal. 8400/8401 movement as the standard black-dial variant

Service part flags

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Lollipop seconds hand

Original: The circular disc at the tip of the seconds hand is the most distinctive element of this reference. The disc is filled with lume material matching the index lume color. The hand stem and disc should be in the same metal as the case.

Replacement tells

Standard pointed seconds hand -- not original to this reference
Circular disc present but lume color different from the indices
Disc not centered on the hand stem at the tip -- alignment is precise on genuine examples

Broad arrow hands

Original: Hour and minute hands have the broad arrow military specification: wide bodies with a triangular arrowhead at the tip. On steel case versions, the hands are polished stainless. The lume fill inside the hands is rectangular and wide, matching the broad arrow geometry.

Replacement tells

Non-arrow-shaped hands -- alpha, baton, or other Omega hand styles are not original to this reference
Hands in wrong metal finish for the case -- yellow-tone hands on a steel case indicate a swap
Lume fill inside hands is a different color than the dial indices

Aluminum bezel insert

Original: Base models use an aluminum bezel insert, not ceramic. Aluminum is lighter, shows a slightly different surface texture than ceramic, and the 12 o'clock pip area is known to fade with UV exposure over time. This fading is an expected characteristic of aluminum, not a defect.

Replacement tells

Ceramic insert on a base-model watch sold as having an aluminum insert -- different variant
Bezel numeral printing on the insert looks screen-printed rather than engraved and filled
Pip at 12 shows incorrect lume overflow or misalignment

Crown

Original: Screw-down crown for 300m water resistance. The crown has "Seamaster" engraving on the face. Screw engagement should be smooth with progressive resistance before locking down.

Replacement tells

Crown without "Seamaster" text -- generic Omega crowns are used as replacements in non-authorized service
Crown spins freely without engaging the screw-down threads correctly
Crown sitting proud of the case even in the locked position

Case back markings

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2014 to present

"Seamaster" text engraved
Wave decoration matching the dial and Seamaster heritage
"300 m / 1000 ft" depth rating
Caliber 8400 or 8401 (8401 is COSC certified)
Case reference and serial number
"OMEGA" and "SWISS MADE" designation
Solid caseback -- no display caseback on this reference

Movement tells

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Cal. 8400/8401 is an in-house Omega movement with a co-axial escapement and a silicon balance spring for anti-magnetic performance. The silicon spring has a characteristic blue-silver appearance -- if the movement is open, it is visible as a flat, non-metallic spring.
Power reserve is approximately 60 hours. The automatic winding is bidirectional. A watch that stops reliably after 24 hours on the wrist has a winding efficiency issue.
The co-axial escapement applies: no tick rhythm at any observation speed is the expectation. The broad arrow hands and lollipop seconds should move as smoothly as any other co-axial Omega.
The 300m water resistance requires the screw-down crown to be fully engaged. A crown that does not lock down correctly has a thread or gasket problem and the water resistance is compromised regardless of what the caseback states.

Sources: Omega Seamaster 300 official; WatchUSeek Omega forum.