I found this interesting coin in a group I recently purchased. It's an VRBS ROMA from Thessalonica. What makes it interesting is that there is only one star above the she-wolf instead of the usual two stars.
The reverse is well-struck and has good details. I don't think it's a case of one of the stars being weakly struck or struck off the flange. The single star seems to be centered above the back of the she-wolf.
RIC doesn't have any info on this type with only one star and my online search hasn't come up with anything.
RIC lists three different numbers with SMTSE mint mark for VRBS ROMA (VII, #187 struck 330-333 AD; VII, #229 struck 336-337 AD; and VIII, #58 struck 337-340 AD). All are listed with two stars.
Would this be a celator's error; engraving the die with only one star?
The style looks good to me so I don't think it's an imitative.

