Late Roman Bronze Coins

I would really appreciate a little  help with this coin.
Officina A or Delta?
The officina letter looks to have a line both at the top and at the base 

it looks more like a delta to me. Workshop A usually has a line coming off the top of the right side, which delta never does...see below.

After a month a some issue with the customs, I received my coin. It looks definitely a Delta!

Yes, it is definitely delta.

Would you be so kind, Nikko, to take a nice picture on white paper and add all data?