RIC VI and Huvelin describe this coin as cuirassed, but in the new London mint book by Cloke and Toone, they correct this and call it trabeate. This coin looks like an obverse match with the example they show and they state that all examples known to them are also die matched.
A nice example, but maybe over-priced at $2467.31. :)
Constantine I
A.D. 310-312
CONSTANTINVS P AVG; laureate helmet and trabeate bust left, holding victory on globe.
COMITI-AVGG NN; Sol standing left, chlamys across left shoulder, right hand holding up globe, whip in left, ✶in right field.
In ex. PLN
RIC VI London 174 , LMCC 7.03.040