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Mass-produced#3 in familyOfficial press photos

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Movement tier: unclassified · caliber Seiko Cal. 4R35: in-house automatic with date, 21,600bph, 41h PR, 24j; hackable, manually windable; used in Presage cocktail and style series · 41h power reserve

Also uses Seiko Cal. 4R35

Seiko Presage Cocktail Time "Mockingbird" SRPE17 Ref. SRPE17J1, silver dial, steel case
Seiko
Presage
Seiko
Presage Cocktail Time
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
40.8 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

The lacquered dial depth and the thin delicate seconds hand are the two indicators of a genuine Style 60s.

Known issues in the market
  • Counterfeit Style 60s dials appear flat under light; genuine lacquered dials show clear depth and color saturation.
  • Thick or stubby seconds hands from other Presage references are occasionally fitted; the Style 60s seconds hand is thin with a visible counterweight.
AreaWhat to checkWhat is correctRed flag
dialLacquered dial depth under lightDial shows clear depth and color richness when tilted under direct lightFlat matte appearance under any light angle; counterfeit or replaced dial
handsSeconds hand profileThin seconds hand with a visible counterweight tail, delicate and proportionalThick or stubby seconds hand; transplanted from a different Presage reference
Common legitimate replacements
  • Seconds hands from other Presage references are occasionally fitted; the Style 60s hand has a specific thin profile.
Expert resources: Seiko Presage SRPK15 product page. Seiko Style 60s fan communities on WatchUSeek.

Authentication guide

Last reviewed June 2026

The SRPK15 Presage Style 60s carries a green dial with a retro 1960s design aesthetic. Cal. 4R35 inside. The Style 60s sub-line has a domed mineral crystal that contributes to the vintage feel; this dome is intentional and not evidence of a replacement crystal. No lume on the dial.

Known reproduction risks

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LOW

The Style 60s sub-line is less frequently reproduced than the Cocktail Time or Alpinist. Misrepresented condition is more common than non-original examples.

  • Flat crystal where the original dome should be
  • Caseback reference number inconsistent with the SRPK15

Dial variants by era

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EraDescriptionIdentifiers
2023 to presentGreen dial with applied silver hour markers and retro-style printing. The dial has a subtle radial brushing or sunburst pattern. The Style 60s references 1960s Seiko dress design language with no date window on some variants (the SRPK15 has no bezel ring).
  • Green sunburst or radially-brushed dial
  • Applied silver indices in a retro style
  • No bezel rim (open case design)
  • "PRESAGE" and "AUTOMATIC" text
  • Domed mineral crystal for vintage feel
  • Leather strap at retail

Service part flags

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Crystal

Original: Domed mineral crystal. The dome is intentional and contributes to the vintage aesthetic. A flat sapphire replacement changes the profile and is non-original.

Replacement tells
  • Flat crystal where a dome should be
  • Sapphire crystal sold as an improvement -- it is non-original for this reference
Dial

Original: Green with radial brushing. The green color should be consistent across the dial without flat spots or color variation from uneven application.

Replacement tells
  • Color inconsistency visible near the edges of the dial
  • Applied indices sitting at uneven heights above the dial surface
Hands

Original: Retro-style hands consistent with the 1960s design brief. No lume fill.

Replacement tells
  • Modern-style hands with lume plots, inconsistent with the no-lume dial
Crown

Original: Push-pull crown at 3 o'clock. No day display; date display only.

Replacement tells
  • Crown or stem that advances a day wheel that should not exist on this reference

Case back markings

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2023 to present
  • SRPK15J1 reference number
  • "100M" water resistance designation
  • "PRESAGE" designation
  • Cal. 4R35 designation
  • Seiko S logo

Movement tells

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  • Cal. 4R35 at 21,600 bph; date-only, hackable and manually windable.
  • Power reserve is 41 hours.
Sources: Seiko Presage Style 60s SRPK15 product page.

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