I would buy this coin but it looks heavy tooled. The reliefs loos less thin than expected.
The diadem looks like it had some tooling
the lines of the drap also.
The portrait should be more refined.
http://www.vcoins.com/en/stores/victors_imperial_coins/208/product/constantine_i_anepigraphic_from_rome/519187/Default.aspx