Bostitch STCR2619 Stainless Steel staples by Salco, 7/16-inch Crown, 24 Gauge. Chisel point. Salco brand, made in Europe.
 
Interchangeable with Bostitch STCR2619, JK 60, Prebena FA.
 
Fits 
Bostitch T6-6OC2 outward clinch hand tacker; Bostitch 
H30-6 hammer tacker, T5-6, 
P6C-6 plier stapler; most STCR2619 series staplers and hammer tackers.