Question about these crazy fasteners

[cheshcan.livejournal.com]

The coat used to be my grandmother's, but I have no idea how old it is--the only tag I can find just says that it's a union-made ladies garment. I adore those buckle-snap-closure-whatever-things and I'd love to find some to use in my sewing, but I can't if I can't figure out what they're called!

Alternately, if you guys can point me towards a community where they get a kick out of identifying fasteners on hand-me-down clothing, that would also be great.

Thank you!