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In-house manufacture caliber · caliber Roger W. Smith Caliber Series 3 (hand-wound, co-axial escapement, 60h power reserve)
Versatile size: fits most wrists (6–7.5 in / 15–19 cm)
38 mm case. The sweet spot for the broadest range of wrist sizes. Neither too dainty nor too bold.
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The Series 3 three-bridge movement is recognizable through the caseback; combined with the 60h reserve and co-axial escapement, these are the primary authentication markers.
Known issues in the market
Only a handful of Series 3 pieces exist worldwide; provenance verification with RWS is mandatory.
Three-bridge movement architecture is distinctive; verify the correct bridge count through the caseback.
Area
What to check
What is correct
Red flag
movement
Three-bridge movement architecture through caseback
Three distinct movement bridges visible through caseback
Incorrect bridge count or architecture; non-genuine or wrong series movement
movement
Co-axial escapement wheel visibility
Co-axial wheel visible within movement architecture
Standard lever escapement; non-genuine or incorrect movement
caseback
Roger W. Smith serial and Series 3 designation
Serial and Series 3 designation correctly engraved
Missing or incorrect engravings; non-genuine caseback
Authentication guide
Last reviewed June 2026
The Series 3 is a round 38mm dress watch with co-axial escapement and small seconds, positioned between the Series 1 and Series 2 in the lineup. Case in yellow or white gold. Production limited to the Roger Smith annual output.
Known reproduction risks
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LOW
No known replica. Authentication approach is identical to Series 1: verify co-axial escapement through caseback and confirm serial number with the workshop.
Presence of a date complication indicates Series 2, not Series 3
Cushion case indicates Series 4
The Series 3 is occasionally confused with Series 1 given similar aesthetics; the primary differentiation is case size (38mm Series 3 vs. 36mm Series 1) and the year of production.
Dial variants by era
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Era
Description
Identifiers
2012 to present
Silver or white enamel dial with Roman numerals. Small seconds at 6 o'clock. No date complication. Blued hands. Case in yellow or white gold.
At least 54h actual run time from full wind (90% of 60h claim)
Less than 54h actual run time; worn mainspring or regulation issue
Common legitimate replacements
No serviceable parts outside RWS workshop.
Expert resources: Direct verification with Roger W. Smith workshop; rwsmith.co.im.
Round 38mm case in yellow or white gold
Small seconds at 6 o'clock only; no date complication
"Series 3" on documentation
Co-axial escapement through caseback
Service part flags
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Movement
Original: The Series 3 caliber is the co-axial without additional complications beyond small seconds. Movement finishing standards are identical to all Roger Smith movements.
Replacement tells
Date complication present means the watch is a Series 2, not Series 3
All finishing standards from Series 1 apply here identically
Case back markings
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2012 to present
Individual serial number
"Roger W. Smith Series 3"
"Made in Isle of Man"
750YG or 750WG material designation
Movement tells
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Identical to Series 1 and 2 in terms of co-axial escapement function and finishing standards.
Series 3 was introduced in 2012; examples from early production are over a decade old and service history should be documented.
