I'm thinking S-160 R-4- Type 1 hair, large 7 small 8, rev of 1799 (The full hub rev used for something like half the 98's the 99's and all the 1800's) wide date with the 9 & 8 well apart, obv heavily polished removing the centers of the hair curls. Obv used for 160 and 161, 161 has a die lump/chip on the right side of O in ONE, the 160 does not. Dull lines or chips in field by denticals above the space between ER on S-160 appear to be present.





















