We also have similar crowns in 6.5mm outer diameter size, plus some quite scarce PVD black 6mm waterproof crowns.
Buy several parts at once from Squinky and you pay only a shipping first on one item. We combine shipping.
See the Squinky Vintage Watch Store for 1000s of vintage watch parts and 100s of watchmaker's original repair guides for many popular vintage brands.
Go with a seller with more than 18,000 positive feedbacks on EBAY since 1998 and a member of the NAWCC watch collector's association since 1997.