Helvetia History
·Just thought I'd add a couple more bits of info:
Two watches with serial numbers either side of the Depollier and hallmarks for 1926 and 1928 respectively. Both with identifying Helvetia features, barrel text etc. Same possible 'Depollier/Brun' style shock protection showing they were using this on watches other than, and earlier than, the Depollier. Also note the Helvetia advert at the end.
Hallmarked 1926:
And hallmarked 1928:
1934 Advert:
If anyone has any thoughts please let me know. Thanks. Carl.
Two watches with serial numbers either side of the Depollier and hallmarks for 1926 and 1928 respectively. Both with identifying Helvetia features, barrel text etc. Same possible 'Depollier/Brun' style shock protection showing they were using this on watches other than, and earlier than, the Depollier. Also note the Helvetia advert at the end.
Hallmarked 1926:



And hallmarked 1928:



1934 Advert:

If anyone has any thoughts please let me know. Thanks. Carl.