Lot of 2 Factory Bulova Watertite Crowns #307B - White

Lot of 2 Genuine Factory Bulova Watertight Crowns, Marked Bulova, #307B, White gold fill, new in package,  Look to be about 4mm or so in diameter. Notably, Bulova called these Watertite, not waterproof. I also personally find the packaging to be quite annoying as any attempt to open almost always it results in the contents being flung across the room. Images do a barely adequate job of representing the lot.