all the 5F1 champ around me have Oxford 8EV speakers and they seemed to have Jensen P8T as well. found one from CTS which sounds like the stock Oxford. they are 4 ohm impedance and DCR is mostly 3.2 ohm
I’m not sure with new and doped speakers but old, broken in and sometimes brittle speakers sound way better with edge doping in every aspect to me. it’s like a having a good preamp tube in vintage tweed amps
it’s an Oxford from ’59 Champ along with one from 62’s. the cone went yellow and I guess it was in a place with carbon monoxide gas around. both has doped in the end
and 60’s Ceramic speaker from Oxford. and another one from CTS. this CTS is not Fender stock but sounds pretty much like the stock speakers.