Need some help, a real nice coin but should i clean the sand patina off or leave it alone? Valentinian III AD 425-455, AE Nummus (13mm, 1.05 gram) Rome DN VALENTINIANVS PF AVG; draped, cuir. and pearl-diademed bust r. VICTORIA AVGG; T in left field; Victory advancing left, holding wreath and palm branch, RM in exergue RIC 2121
Hoi ancient times, I myself should leave it. I don't think you get a better reading result when the sand is gone. But that is my opinion