I have a number of these panels for sale.
Astropower AP-120 panels. The company no longer exists but back in the day they were top of the line.
I’ve measured the Voc=21.2v and Isc=8amp (open circuit voltage and short circuit current) and they’re actually higher than the rated numbers!
https://atlantasolar.com/pdf/Astropower/ap-120-new.pdf
This is a link to the official data sheet.
Dimensions are 26” x 58.1” x 1.4”
They currently have old MC3 connectors on 12ga wire but I can change to 10ga wire with new MC4 connectors for $5 extra
Personally I’m using some for my shortbus build but will have extra. They are so cheap because they do need a little tlc in terms of re-sealing the edges so they have continued long life.
$70 obo
Close to highway 5 in northern San Diego.