As daft as this may sound, but something like a Carlsbro 50-Top may do what you want.
I have 1 from about 73'/74' and I find it to be a really nice, fat sounding clean amp with plenty of volume too.
They're normally to be found for about £300, and sometimes for alot less.
I've already got a 50W Miles Platting V50 from 1974. It's fantastic, and a great, loud, clean amp. I'm just nervous having a 34 year old amp as my main gigging amp. I want the Miles Platting as my backup, and a much newer, hand-wired amp as my main gigging amp.
Anyway, it's all sorted now. I'll just Paypalled Nik at Ceriatone the dosh for a 2204 clone, with PPIMV, FX loop, and also one of their Kleinulator boxes - which is an FX loop buffer box - pretty essential for reliable, non-tone-sucking, use of a non-buffered FX loop.
All I have to do is be patient for about a month - maybe I could even practice a bit ----- ahhh, no, maybe not. I hate practicing.