If you are looking for a 62801dc switch, take a look at this one from Steiner.
https://www.steinertractor.com/IHS38...F=517B63D8A8F2
Yes it's expensive, but you have to be willing to PAY for reproduction, not generic will fit. Make sure it comes with the knob. Don't trust my research, verify the Cadet and cross-reference part numbers before you order anything.
I'm a big fan of keeping things original. Part of doing that is buying reproduction parts. Some things--especially electrical--don't last forever. I wouldn't want to replace my 50 year old electrical parts on anything with other 50 year old used electrical parts---unless we are talking about something EXTREMELY rare and valuable. Heck, I've had to replace 3 key switches in Cadets in the last 10 years. Unless it is NOS, I wouldn't install a used one if you GAVE it to me.
By the way, when Steiner first came out with those, I ordered one (think it was different for Magneto application) to put on a 47 Farmall M my grandmother bought new.