Ease to sew, secure and can be used on either side up. Size is 7/8″ and that has a lot of places it can be used. Price; 1 to 12 @ .92, 13 to 144 @ .84 each, over a gross the price is .74 each. Hand cast in the USA.
This is the matching 4 hole matching button for 149.
more common in Civil War Generic