So....What Did I find at Grandma's Farm???

...however I did find a really nice expensive accordion of my grandpa's, but what the hell will I do with that?

Button accordion?
Piano accordion?
Concertina?
I love them. I'm told my great grandmother played a concertina and it was considered "common" back in the 1800's. One of the band members I mixed for in the 80's regularly played a button accordion and concertina, always went over well.
 
My recommendation would be to change ALL the power supply caps. Everything looks original so those caps SHOULD be changed at the very least.
Great find. Very happy for you.
Agree... :yesway:.

If this '74 Princeton Reverb were mine, I would definitely replace the 44 year old power/filters caps. No matter how well they look.

Also, I would consider a speaker replacement. Save and store away the original. Spring for some extra dough, and look for an Alnico based speaker by any of the current speaker manufacturers.

Reverb.com's price guide on the '74 PR shows these amps selling at $1200.
 
Yes, you really need to replace the filters. At that age, & especially having sat for an extended period without use, they can go off with an extremely loud bang & expel their corrosive insides all over. Terrible stuff that is pretty well impossible to remove. Not worth risking. Choose your replacement speaker wisely, it has the final say in your tone. Cheers

Edit; I imagine the tubes will be fine, they were made to a much higher standard back then than today. Not unusual for tubes of that era to be good for 10,000 hours +. Cheers
 
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