Seth Thomas Small Mantel Clock with B-48-J Movement

June 13, 2012 | By | 4 Replies More

This cute little Seth Thomas mantel clock is 9 13/16 inches tall and 7 3/8 inches wide. It has a white enamel dial, and the minute hand is 1 3/4  long. It strikes the hour and half-hour.

The model B-48-J movement in this clock looks like a forerunner of the No. 120 movement in my earlier post. Superficially they look similar, but the gearing and escapement are different. Both movements have stationary barrels to contain the mainsprings. This movement has the barrels mounted to the back plate, but the 120 has them mounted to a removable lower front plate. This means that one can replace the mainsprings on the No. 120 movement without separating the  plates. This movement (B-48-J), however, requires disassembly to replace a mainspring.

See more photos.

Repair job 5737. A previous repair shop had installed bushings that were way too tall (3 times the required height). I polished the pivots and installed proper bushings. I also straightened bent teeth on the canon pinion, reduced the hand-set tension (to make the minute hand easy enough to turn) and replaced one missing pinion wire (or trundle).


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Category: American Clock Repair, Seth Thomas Clock History

Last updated: June 13, 2012

Comments (4)

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  1. Bill Stoddard says:

    The “Eton” was made about 1909, give or take a few years.

  2. deane cirone says:

    i have a simular model called an ‘Eton’. it has an inlaid design on front but otherwise the same. it has a 48j movement. any idea when this clock was made?

  3. Michael says:

    I own that same exact model in excellent condition. Any idea the value?

  4. Gene Alsvig says:

    I have a Seth Thomas with a 48 Q which looks the same as your 48 J. The rack tail has been repaired and I need to fix it.The chime doesnt work correctly.Thanks for the photo of yours as I can see what it should look like.I have been working on clocks about 15 years and i Love it.I have the same mantle clock case as yours

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