1. Greek. 5.3Gr weight, 15mm diameter (irregular, measurement in largest point). Tryed to find it by weight and by non precious metal and wasnt able at all. As i am not able to read all the inscription (or even know what it could be) i didnt tryed that
2. Roman. Matches mostly the "Maiorina - Valentinianus II REPARATIO REIPVB":
- Matches lettering: DN VALENTINIANVS (IVN) PF AVG - No room for the IVN in the coin
- Matches lettering: REPARATIO (REIPV)B - too worn to read REIPV, but the last B is vivible
- Matches Emperor standing front, offering hand to kneeling woman on left
- Do not match: clothing
- Do not match: mint
- Do not match: head ornaments
- Do not match: weight: 5.2gr instead of 3.6gr

Link: https://en.numista.com/catalogue/pieces62996.html