It was a Super I think, it was big and tall. Check the video of me playing with Sam Lay (Butterfield's First Drummer)
YouTube - Everything's Gonna Be Alright -PBFS Gathering 2007
I met Paul's son online, and his wife (Gabriel Butterfield is Paul's son, Salli is Gabriel's Wife). They invited me down for a little get together and they had that Amp. Rod Hicks was there, too, and Bob Corritore. If you ever want to send them a shout out send me a PM. At the end you can clearly see the amp, it is big.