Newey size 7/7. The sockets are stamped 'Newey Pat 20143C-22'. These were fitted to Barbour waxed jackets and motorcycle jackets in the 1960s.
10 Newey Press Stud Fastener Snaps - Size 7/7 - 1960s Barbour Jacket Period
10 Newey England Press Stud Fastener Snaps - Brass 17mm Tops - Size 7/7
Two Newey England Press Stud Fastener Snaps - Brass 17mm Tops - Size 7/7
Two Newey England Press Stud Fastener Snaps - 17.5mm Black Tops - Size 7/7
Snap Fastener Press Stud Popper Metal Large Small Medium 11 TYPES BUY 2 4pk 538D
Military black snap fastener press stud kit DOT brand poppers boat cover canopy