My brother-in-law has an old strat which is a '63 body with a '56 neck. Need help on confirming that the electronics and pups are original as well as the bridge. Can anyone help me understand pot date codes and give assistance on authenticating that the pups, pots, and caps are from '63?

I want to offer fair price. The guitar has been refinished but the neck date and body date markings are intact.