times change

You know I have seen them with and with out wood sides, not sure if that was an upgrade
there are no holes in any of my amps where the wood, would have been?

maybe someone with more knowledge can chime in.
I'm new at this

https://www.usaudiomart.com/details/649418513-belles-150-power-amplifier/

perhaps like that one?

I think that person was overpricing that amp. I’ve seen similar like that go for $300 +/-

like this one:

https://www.usaudiomart.com/details/649457996-belles-150-power-amplifier/

Bingo
Yes that's it, ... err them

umm as for his asking price, I would have bought that.
just for a spare

just saying, they are spectacular amps and to find 1 is good, but to find 4

well i may have them for a while

Yes, they are spectacular amps. I talked a respected reseller of used/vintage equipment down to $700 for my 400A, but it still cost $100 to ship at 55lb. Not complaining though, I’m very happy with it, and my Vandy 2CE Sigs like the 200 wpc as well. So ultimately happy I found an even more rare 400.