Hi Kydog: it's a Supro. I found a schematic
Here that suggests it's a bass amp. The '82 watts' refers to the total power consumed, not its output which is in the 25 - 35 watt range. Twin 6L6s, two(?) 12AX7 preamp tubes, solid state rectifier. Couldn't see the speaker codes; no guess on make but it's a ceramic speaker. This version of a Supro Thunderbolt is not to be confused with the 1624 and 6420 Supro Thunderbolts; highly sought after amps. Supros were made and marketed by Valco who, along with Danalectro, made amps for Gretsch, Airline / Montgomery Wards, and Sears / Silvertone and others. Are you buying it? Did you buy it? CJ