this coin has an undersize flan with almost no legend, but the wreath has a nice clear depiction of an equilateral cross. Did it have Christian significance or was it perhaps just an attractive design...I don't believe that the answer will ever be known for sure (barring some ancient source discussing it); but we can speculate.
Jovian
A.D. 363-364
15mm 2.6gm
D N IOVIANVS P F AVG; pearl-diademed, draped and cuirassed bust right.
VOT V surrounded by laurel wreath with cross in badge.
In ex. ALE(?)
RIC VIII Alexandria 92