I could be wrong but I'd say the left anler looks very narrow with little coronet and next to no brow tine? If so I'd say despite it being a nice head it might not get on the medal table.... I will be very happy to be proved wrong though, nice buck, very well done.
Opinions are like arseholes....... we all have them, and most of them stink
If u can post a few more pics would help , once the heads cleaned it would be much better
measure the length of the antler
and the brow tine
Then post it up that will be a good gauge .
but a guess bronze if it has tines