Found A Vintage Accordion Today

My wife and BiLs are selling the house they grew up in.
The middle brother lived there after her parents died, but he's no longer capable of living there alone.
We don't want to be landpeople so we're selling to an outfit that cuts a check, does cleanup, repairs, make it nice and resell. No realtors, no visitors...
Anyway, going through everything that might be important or private. Shredding that and leaving everything else.
In a closet, I found a 3 row by 2 row bass, button Hohner accordion in mint condition. In the case.
Did a fast check on my phone & am seeing $500 to $800. Go figure.
I also found:
A pill bottle full of buffalo nickel.
A pill bottle full of wheat stalk pennies
A Large Silver Yen piece from the 1890s. (Worth around a hundred bucks)
A certificate for 100 shares of a company. Shares were bought at 8¢, now worth 34¢. Brokerage fees will bring value down to $20, maybe.
And that middle brother's Bob Shane Martin D-28. (I knew that was there)
Everything else is crap. But my BiL wants his vinyl. 500 or so ancient vinyl. I don't even have a turntable!
My wife is renting a U-Store, because those are not cluttering my music room.
One more trips, closing on Wednesday.
Gonna have pot money for a couple years!!!