Slant 6 OEM valve cover
I have one from a 1974 slant, pretty sure a CA car. No rust as I recall, but the blue paint is chipped. The rubber grommets are likely degraded. Real cheap, say $10. Shipping would be pricey, but catch me on an L.A. trip, like say leaving Nov 24 and returning Nov 29, going to Reseda, Santa Monica, LAX, and Huntington Beach, so PM if close enough to hand-deliver and heads-up so I can take it off the spare engine. I'll trade you even for an Offenhauser aluminum cover if you happen to have one, or an aluminum 2 bbl intake. Heck, I'll even kick in $20 extra.
Next trip down south might be around Xmas. Check my other slant parts I've been listing on the Sacramento cl for 6 months (only 1 part sold, pain to repost every 7 days).