Watch List notes:

Leo I (457-474). AV Solidus, Constantinople mint, c. 465-466 AD. D/ DN LEO PE-RPET AVG. Helmeted, pearl-diademed and cuirassed bust facing slightly right, holding spear and shield. R/ VICTORI-A AVGGG Θ. Victory standing left, holding long jewelled cross; star in right field; in exergue, CONOR (?). Cf. RIC 605; cf. Depeyrot 93/1. AV. g. 4.48 mm. 21.00 Traces of double striking. Minor area of flatness on obverse and slightly bent flan, otherwise about EF.

Probably the R in the exergue is a consequence of the double striking.