OK, here's something that's completely impractical as a gigging bass rig - the Fender Musicmaster Bass. This one is the 6V6 version - tubes are 12AX7, 6V6, 6V6. Solid-state rectifier, and uses an interstage transformer as a phase inverter. The original speaker is long-gone, but it has a period Alnico 12" installed. The new speaker is probably out of something like an Ampeg guitar cab, and it sounds great in this application. The MMB puts out maybe 15 watts on a good day, downhill, with a tailwind. It's probably the least "Fendery" Fender ever made.
This one was originally sold by Don's Music City in Burlington, NC. Pretty much all the music gear in that part of the state came from Don's right up until Shomaker's opened up in the mid '80s. I know the B-15S I played in high school Jazz Band had the same sticker on the back, as does the B-15N I play now
The 6V6's are removed in the pics, but are included. The amp has been re-capped and has had the AC cord replaced. The amp sounds great and is killer for recording. You could probably gig with it as a guitar amp if you're not in a metal band. Own a nice piece of Fender history (especially if you have a Musicmaster Bass guitar!) for only $300 plus shipping. If you're in NC, I'll meet you within a reasonable distance of Raleigh for gas money and / or tacos.