Here's a fairly rare type for Constantine.
Constantine I
Autumn- December 306
CONSTANTINVS NOB CAES; laureate and draped bust right, seen from the rear.
VIRTVS AVGG ET CAESS NN; Mars helmeted advancing right; holding transverse spear, trophy over left shoulder; • in left field.
In ex. PT
RIC VI Ticinum 76
I missed it, but another board member got it (congrats again)
It was sold as a "buy it now" for $25; which is quite a bargain. I suspect the seller did not have a clue about what he was selling. I browsed his other listings and they were on the expensive side, for instance, a Julian II VOT X from Rome in similar condition to this coin was priced at $50.