Unusual SBC valve covers I have not seen before and the Buy-It-Now price is not bad.
https://www.ebay.com/itm/Ridgeway-vi...BbTn9Q&vxp=mtr
"Rare, "Ridgeway" heavy, sand cast aluminum valve covers... These were the work of Ralph Ridgeway of the famed "Ridge runner ram" intake manifold (the industries first tunnel ram...circa 1968)....these vintage covers fit small block Chevy V8s 1959-1986, 262-400 cu.in....with the straight across bolt pattern, 2 extra holes that were on the side of one cover have been welded shut(see photo) ...the weld repair is not noticeable from the outside...Very good driver quality... these are tall(about 4-1/4")...1 cover has a small gouge"