Lot of 2 Factory Bulova Spring Crowns #302 - White

Lot of 2 Genuine Factory Bulova Spring Crowns, Marked Bulova, #302, White gold fill, new in package,  Look to be just over 4mm or so in diameter and likely for smaller watches. Bulova considered these to be dust-proof crowns, and I personally find the packaging to be quite annoying. Images do a barely adequate job of representing the lot.