DATING BROOCH FASTENERS - Global Gemology - Rare Gems & Jewels
Brooch - Wikipedia
Dating Brooches by Clasp or Fastening
Dating Brooches by Clasp or Fastening
Amazon.com: Fashewelry 20Pcs Platinum Iron Heavy Duty Safety Pins 2 Inch with 3 Loops Metal Kilt Pins Fasteners for Brooch Making Blanket Knitted Fabric
Dating brooches: clasps (Part 1) – navette jewellery
Medieval round Sweden brooch, XIV-XV centuries
Dating Brooch Fasteners - 1850 to 1910
Five tips on how to date a vintage brooch…. with pictures to help! – The Jewellery Muse