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Up for auction is a Byzantine Follis coin of Justin I from 518-527 AD
Diameter: 31mm
ID# 912L
MINT: Constantinople
OBVERSE; DN IVSTINVS PP AVG
- Diademed bust right, draped and cuirassed.
REVERSE; CON
- Large M between X & X, cross above & epsilon below.
Reference: Sear 64