You are looking at an Orange OR80 with reverb.
I wish I knew how old it was, but found no date when I had it apart
for these pictures.
This amp sounds great!! The reverb works wonderfully too. 
I have a half stack reissue and it has nothing on this thing. 
O.K., the coat of arms emblem on the tolex is missing. 
The one transformer has been replaced with a fender piece
the one speaker has a 3/4 inch tear in the cone (doesn't affect anything)
 and 4 of the back panel screws and washers are gone. 
The amp has a dent on the front right side of the cabinet 
about an inch long and the tolex has only minor wear, scratches, etc. 
I also believe the power cord was changed at one time. 
The amp itself has serial # 80061R, 
and the cabinet has one that reads OA2476.
 Check out those big square speakers, 
I can't say I've ever seen those before and they have the 
orange stickers on them too. This is being sold as is so please email me with any questions.