I have seen about equal amounts gamma and delta for this issue, but without being able to actually see the workshop there is no point in trying to say which it is. There is also always a possibility that it is one of the other workshops out of five possible, though I don't recall seeing any examples for A,B or epsilon.
The best way to record this
mintmark would be something like this...and don't forget the dots, which are
part of the mintmark- •TS •[?]• with the bracketed question mark reflecting the uncertainty of the exact
officinaalso •
XXX• is correct versus plain
XXX