Clean it a little bit and preserve what’s there with Gibbs oil. After studying this bike for days, reading your posts about the paint issues (and your pointing out the trace of red primer) I think it is original paint. Seller says he bought it off the original owner and there is a name scratched into the bottom of the crank housing. Seller added the Persons seat and bar, but the rest of the bike is allegedly original (who really knows, right?). My wife’s ‘68 Slik Chik is immaculate (like her) so this one will stay scruffy (like me).