–Spent a LOT of time looking into 1978 93150 bracelets for the 1680 which is so complete it came with a “big crown” SWIMPRUF tag!). Put an offer in at eBay on a VC (1978) clasp that lacks a “93150” stamp. Possible it’s from a 9315, but I found (and saved) several no-stamp VC clasps that were undoubtedly 93150s.