Watch List notes:

Ostrogoths, Uncertain king, early to mid 6th century. Æ 42 Nummi (29mm, 9.74g, 6h). Countermarked early imperial bronze issue. Mark of valuation (XLII) cut into obverse of a Rome mint as of Claudius with Libertas (RIC I 113). Cf. MEC 1, 66-7. Fine
Estimate: 50 GBP