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15, 16
Reverend Rob's picture
Reverend Rob
Panel Member
Posted August 14, 2014 - 5:52pm

Based on the Sonceboz 246. Modifications to the balance and cock by Bulova.

bobbee's picture
Posted August 14, 2014 - 3:10pm

Both have marks at the left upper edge of the detent screw, which is on the right of the crown when facing upright as in top pic.

Janet's example also has a larger circle to the right of the smaller ratchet wheel.

William Smith's picture
William Smith
Club 5000Panel Member
Posted August 14, 2014 - 2:25pm

Janet's 1924 16 jewel w/ Asterisk date stamp.

stuartbaker104's 1926 15 jewel 6N w/ Triangle date stamp (from 1926 Princine watch record).

I'm having trouble seeing either the Asterisk or the Triangle in pics above, but we double-checked with both watch owners for conformation of date stamp.