Pharmacist's or druggist's weights manufactured by H. Troemner in Philadelphia, Pennsylvania in the 1800's. Denomination: 2 Drachms. Henry Troemner began business in 1838 as a manufacturer of scales & weights. His scales were of such good quality that in 1856 he received a contract to make scales for use by the U. S. Mint. Brass, 21mm, very thick. The 3ii in the center is actually an apothecary's symbol indicating the weight.