This auction is for a new old stock Certina stainless steel watch crown.  It is for the dust proof type.  Very rare!!! The diameter of the crown is 5 mm.   Please ask your questions before bidding.  Please also check the shipping cost, since it is part of this auction.  I will not negotiate the shipping cost after the auction ends.

Shipping in US with tracking is $5.  International shipping is at a flat rate of $25 with tracking.