I have an OEM EV12L. The 80's ones are pretty reasonable. You really only need one since they are 200W.
Here is one on ebay, that I have nothing to do with but watching:
This is the best speaker I have (again- the auction isnt mine, I have the exact same speaker and will never sell it). Its unbelievable in every application- british or american amps, clean through extreme OD, low volume through head explosion volume. I have a small collection of celestions and weber's and have done shootouts, this one beat them handily. No matter what I was putting it up against, it always sounded like it had a richer, fuller sound. More 3d, and broader spectrum. It performed better across all playing styles as well- power chords, open chords, barre chords, noodling, arpeggios, etc.
I've had it in closed back and open back- sounds great in both. In the open back, for me, it needed a beam blocker. In the closed back it didn't.