As far as I remember, there is no campgate for Crispus struck at Ticinum mint, IVL CRISPVS... does not appear at Ticinum, there is no (only) laureate head for Crispus' Providentiae Caess at Trier mint and no IVL CRISPVS... legend for Providentiae Caess.
The bust does not look official and the R of PROVIDENTIAE is a N.
Wheight and diameter are not corresponding to official features. If wheight can be greatly varying, diameter should be a good data and if you check the pic below, you will see that there is something wrong (and my coin is 15mm, not 12mm).