Vintage style bass amps seem hard to find these days, especially affordable ones.
For every vintage reissue bass amp there's probably ten or more vintage guitar models amps available.
About ten years ago I saw an amazing looking bass amp in a music store. It appeared to be an Ampeg B-15 Portaflex, the legendary bass combo from the 1960's.
On closer inspection I realized it was a new, solid state remake of that classic old tube amp, the B-15 Portaflex.