Material : Calf Leather Horn Back Strap. Black with Green Stitch ,  1 : 1 Dimension, Brushed SS Insignia Single Fold  Deployant Clasp,  all correct markings, Conversion Links (4 Pieces) from SS Bracelet to Strap  Inclusive

Dimension :

Lug/Buckle  :  28mm / 19mm 

Length :  71.5mm (110mm with Clasp ) / 107mm

Can install for :

All AP Royal Chronograph Secs at 12 watches...