bassman 70

I need help finding the date on the cab, and also if it does have original speakers what the estimated value should be. If the speakers are replaced, does it still have any value?

I haven’t had a tube bass amp since selling off my little SB12 a few years back. I picked up this rig today, complete with amp cover, grounded plug, nice JJ power tubes from its original owner who purchased new in 1981. I even got to demo it, all warmed up and ready, with his G&L Tribute...