www.925-1000.com

Any idea on where I can find info beyond that?

I came across these in a box of my grandmothers things. My local antique shop said they are coin silver but has no idea who made them or when. Any info would be appreciated. https://scontent-yyz1-1.xx.fbcdn.net/v/t1.0-9/14732151_1113430562045077_4202338476337667339_n.jpg?oh=a571dd2d25f2a7b1556e7bd1d...