I have a similar one. I also thought it was doorhandles or even cornucopias. Interesting to see there is another mintmark with the variety.
Constantine I 329AD
Laureate, bust right, CONSTAN-TINVS AVG
Campgate, 6 layers, 4 turrets, star? doors open, 3 panelled with dots and door handles, VIRTV-S AVGG
SA dot in crescent RL?
RIC VII Arles var, R5
20mm, 2.47g