This is a AP style Clasp,Sourced by Strapmeister .
1-Polish stainless steel clasp.
2-Gold plated steel clasp
3-Rose Gold plated steel clasp
All 3 clasp is stamped & suitable only for Audemars Piguet straps .
Its Available in 2 sizes which is 18mm & 20mm Strap width . Price is for the Clasp only .Shipping is free to most places.