This coin has only two stars over the altar instead of the normal three. It's an engraving error though, instead of a proper variation since the engraver ran out of room for the middle star. You can see clearly see the one to the left of the globe, while the one on the right is barely visible, almost obscure by the altar and the Q in the legend. There just was not room for the middle star due to the crowded space.
Crispus
A.D. 321
19x20mm 3.0gm
CRISPVS NOB CAES; laureate and cuirassed bust right.
BEATA TRANQVILLITAS; Globe set on altar insc. VO/TIS/XX; above two stars; C/R across fields.
In ex. PLG
RIC VII Lyons 133 var.
