In the late 1870s many series had a dime S mintmark applied using the smallest font punch which was intended for dimes. I will show you the largest examples being trade dollars. They are know on rev dies dated 1875-1877 in this series and in a few different hub combos but only on the 2nd style rev. There are 4 specific date/hub combos that use the micro S and each is know with a large S equivalent. The 75s is the only scarce micro S but interestingly enough the large normal size are the scarce varieties on the 76s type 1/2 & 2/2 with the latter being semi-rare. Makes for an interesting sub-collection. It is unknown why the punch was used. 75s 1/2 (large & small) 76s 1/2 (large and small) 76s 2/2 (large & small) 77s 2/2 (large & small)
