To be honest this generic design for a fire hydrant hasn’t changed much if at all. My version is a generic version based upon the current 5 1/4″ American-Darling B-62-B-5 and photos of older 1930’ish hydrants. The changes I made were basically to move the hose connections around, change the dome and extend the base a bit.
You can purchase these in both FUD (Frosted Ultra Detail) and FXD (Frosted EXtreme Detail). I strongly suggest you go with the FXD for a cleaner print. - details for both are on the materials information page