16 Aug
2026
16 Aug
'26
3:01 p.m.
Looks to me more like a spare tubes rack, not a "plug board" of tubes
other than the fact that you plug them into the board. Imagine the
wiring you'd have to have underneath if there was actual plugboard
logic. Plugboards are for plug wires not tubes. It is very rare
though.
b
On Sat, Aug 15, 2026 at 10:51 AM DonResor via cctalk
<cctalk(a)classiccmp.org> wrote:
Interesting but not anywhere near worth the asking price, I think.
A lot of rust and who knows what else.
Rare! Retro IBM 604 Calculator Plugboard, Pluggable Units, Vacuum Tubes -
Parts
https://www.ebay.com/itm/128026803244
Donald R. Resor Jr. T. W. & T. C. Svc. Co.
http://hammondorganservice.com
Hammond USA warranty service
"Most people don't have a sense of humor. They think they do, but they
don't." --Jonathan Winters