Vtg Anson Men's 12K GF Tie Tack Screw-Back Pin, Gold Faceted Element 1940s-60s
£33.86
It's very hard to see, but behind that piece is marked "Anson, 12 KG" - I think there is also a "F" after the KG, again hard to make out. Dates from the 1940s-60s era. The condition is as shown in the photographs.