Most buttons are brass, made by Waterbury, however some of the more specialized ones are not.
Please IGNORE the shipping costs for buttons. It will NOT be $2 per button (so you will not pay $20 for 10 buttons). The shipping calculator still has not been worked out and changes $2 for each item. If you pay with paypal and overpay the shipping, you will receive a refund. If you use a credit card, you will just be charged the actual amount (at least pretty close to it).