Roman Republican, Roman Republic, L. Calpurnius Piso Frugi, silver denarius 90 BC, sandal control

Roman Republic, L. Calpurnius Piso Frugi, AR denarius 90 BC. Head of Apollo right, laureate, with a sandal behind (control mark). Horseman advancing right, control mark XXVIII below. 18.5 mm, 3.72 g. 

VF+, minor surface roguhness, the reverse slightly off-centre, surface marks. Extremely rare obverse control mark, only this example on CoinArchives, absent from the RBW collection. 

Crawford 340/1

ex-Robert William Hubel (1891-1944) collection, reportedly assembled from 1929 to 1939 in Detroit, Michigan.