They are pewter. Obviously hand-crafted by an artisan back in the 30s. The screwbacks were broken so replaced with surgical steel posts. Disc clutches included, of course. Small Lucite thermoset yellowish/ greenish "Moonglow" cabochon set in the centers. No flaws. Will come in a gift box.
PS: If you like full-on retro, these go nicely with the 40s romper & skirt set in shop.
ON SALE? It could be. Private sales are done here from time to time so look for a dark pink sale banner with a discount code (percentage off) on any of my shop pages. Individual items do not show sale prices during private (non-site-wide) sales.

This item is sold from an excellent, highly rated vintage boutique in Northfield, OH.