Internet Horology Club 185
Help with serial No.

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https://ihc185.infopop.cc/eve/forums/a/tpc/f/8881029912/m/3021009382

October 17, 2007, 07:47
John W. Clark
Help with serial No.
Hi,
I have a Bunn Special Ser. No. 3857121 21j just looking to fill in the date and the mainspring data (40/60 hr). Case looks original Keystone, J. Boss. ?? Thanks, John
October 17, 2007, 10:49
Lindell V. Riddle

Hi John,

According to the Illinois Production Listings in the "Illinois Encyclopedia" your 3857121 is a Lever-Set, Open-Face, 21-Jewel, Model 9 Bunn Special from 1921 production. The "Model 9" and "1921" are probably the most important factors in your mainspring situation. Bottom line, yours would be the "40-Hour" and not "60-Hour" as that did not start until 1924 production.

Perhaps someone else can help with more specifics.

Lindell

Wink
October 17, 2007, 13:31
John W. Clark
Hi Lindell,
Thanks for your help. This particular watch had a name and a date on the inside back of the case 1924. Whether it is a birthday or purchase date I'll never know.
Cheers, John