I am leaning toward official issue. Note the eye style on this page:
http://www.constantinethegreatcoins.com/sis/
The reverse is crude, but I think the reverses were possibly engraved by a number of different individuals.
http://www.constantinethegreatcoins.com/sis/
The reverse is crude, but I think the reverses were possibly engraved by a number of different individuals.





















