Congrats on the find ChuckD! And another welcome to CB too.
Looks like a great start for you and your Dad to work on together. I can see some pretty good arguments coming up now! Fun ones though.
Looks like the PO couldn't find, or didn't want to bother with, an original turn-signal switch. So instead attached that older external style. Probably works pretty well, but the factory ones are still available too, so whenever you get 'round-to-it, that can be on your list as well.
Nice to start with an uncut one too. You can either decide to cut it for larger tires, leave it uncut for the cool look and ease, or something in-between.
Good luck. And have fun.
Paul