Seth Thomas Pocket Watch Model 23
BRIDGE MODEL No. 23.
The Seth Thomas Bridge Model 23 is represented in the Ehrhardt American Numbered Drawings as EA 817 and can be identified through the use of the drawing below:
12-size Model 23 was the only model that Seth Thomas produced with a bridge plate. Model 23 movements were all manufactured with a nickel finish.
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Select Illustrated Grades within Model 23
Seth Thomas Model 23 Movement Markings
The standard movement markings on Seth Thomas Model 23 movements started at serial number 350001 with the “Seth Thomas” portion of the signature in an arc just above the “Thomaston, Conn.” portion of the signature on two lines. The pattern of the signature on Seth Thomas Model 23 movements remained the same from the start to the finish of their production. Serial number 3504088 is the highest serial number utilizing this marking format for which photographic documentation is available on Page 3 of the Seth Thomas 12-size Image Gallery of the Pocket Watch Database. The Model 23 movements with jewel counts higher than seven have the count marked below the signature and the 17-jewel adjusted movements are marked “Adjusted 3 Positions” on the back of the pillar plate, visible from the top plate adjacent to the balance wheel. The adjusted movements have a unique checkered engraving pattern, and the movement markings are in gilt lettering. An anomaly to this pattern can be seen below in 17-jewel serial #3500007. The extra jewels are clearly seen to be present; but the movement is not marked with a jewel count and could be mistaken for a 7-jewel movement if the jeweled pivots are not observed.
Movement Marking Style 1 - Documented serial number range 3500007 - 3504088.
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Select Illustrated Grades within Model 23
Seth Thomas Grade 25
7 Jewel - Model 23
This 1913 Seth Thomas 12-size hunting Model 23 pocket watch was manufactured with a nickel finished 3/4 plate, 7 jewels, and it is non-adjusted. The movement is stem wound and pendant set, with a Breguet hair spring, and plain/simple regulator. Its serial number is 3503163, and its grade is Seth Thomas grade 25. The movement is signed “Seth Thomas Centennial Thomaston, Conn.”. This is the 7th Seth Thomas Model 23 pocket watch produced. Model 23 serial numbers started at 3500001 and concluded at 3505000.
The movement is fitted with a 12-size Seth Thomas Arabic dial with a hash marks minute track and red five-minute marginals, fitted with Seth Thomas #1277 blued spade hands 12-size.
The movement is cased in a 12-size American Watch Case Company of Toronto Ltd. 14k 10-Years gold-filled open-face Empress watch case with screw back and bezel, serial number 3731511.
Seth Thomas Grade 26
15 Jewel - Model 23
This 1913 Seth Thomas 12-size hunting Model 23 pocket watch was manufactured with a nickel finished 3/4 plate, 15 jewels, and it is non-adjusted. The movement is stem wound and pendant set, with a Breguet hair spring, and plain/simple regulator. Its serial number is 3501673, and its grade is Seth Thomas grade 26. The movement is signed “Seth Thomas Centennial Thomaston, Conn.”.
The movement is fitted with a 12-size Seth Thomas Arabic dial with a hash marks minute track and red five-minute marginals, fitted with Seth Thomas #1277 blued spade hands 12-size.
The movement is cased in a 12-size Illinois Watch Case Company Gold-filled Supreme watch case, serial number 3934224. There is an interesting Illinois Watch Case Company script monogram "IWC" between the model name and serial number.
Seth Thomas Grade 27
17 Jewel - Model 23
This 1913 Seth Thomas 12-size hunting Model 23 pocket watch was manufactured with a nickel finished 3/4 plate, 17 jewels, and it is non-adjusted. The movement is stem wound and pendant set, with a Breguet hair spring, and plain/simple regulator. Its serial number is 3500007, and its grade is Seth Thomas grade 27. The movement is signed “Seth Thomas Centennial Thomaston, Conn.”. This is the 7th Seth Thomas Model 23 pocket watch produced. Model 23 serial numbers started at 3500001 and concluded at 3505000.
The movement is fitted with a 12-size Seth Thomas Arabic dial with a hash marks minute track and red five-minute marginals, fitted with Seth Thomas #1277 blued spade hands 12-size.
The movement is not presently cased.
Seth Thomas Grade 28
17 Jewel - Model 23 - Adjusted to Three Positions
This 1913 Seth Thomas 12-size hunting Model 23 pocket watch was manufactured with a nickel finished 3/4 plate, 17 jewels, and it is adjusted. The movement is stem wound and pendant set, with a Breguet hair spring, and plain/simple regulator. Its serial number is 3504001, and its grade is Seth Thomas grade 28. The movement is signed “Seth Thomas Centennial Thomaston, Conn.”.
The movement is fitted with a 12-size Seth Thomas Arabic dial with a hash marks minute track and red five-minute marginals, fitted with Seth Thomas #1277 blued spade hands 12-size.
The movement is cased in a 12-size Keystone Watch Case Company gold-filled open-face Victory watch case with screw back and bezel, serial number 5318571.