NOS unused old-stock Speidel 10k white gold-filled early Twist-O-Flex expansion watch bracelet.
The ends are straight 3/4" (18.8mm), you can file them to 11/16" (17mm-18mm) or 5/8" (just under 16mm).
The length at the spring bars is 6 3/8" (162mm).
We can shorten it for no extra charge and might have links to add, send a message with length you need before purchase and we'll see if it can be done.
