i got a few rectifier tubes to try out and don't really need them all, same with an NOS Brimar 12au7 (cv4003 i think).
the rectifiers are all used but work fine:
Sylvania 5u4gb (not coke bottle shape, it's a big round tube symmetrical tube), $20
RCA 5v4 (similar to GZ32)$15
RCA 5y3gt, $15
Admiral 5y3gt, $15
the Brimar tube was NOS and i played it for about 3hours, need $35 for that one.