There are a total of 3 heads.  These are extremely hard to find and only came on 350 hp 348 tri power cars from early 1960 to 1961. A pair and an extra.  The matching pair are dated for May of 1960. The extra is dated October of 1960.  Along with a bunch of nos parts for the rebuild.  These came with a 1960 belair that I purchased from the original owner. the car removed these and replaced them with hi horsepower 409 heads in 62. I do have other pictures but eBay only let me post 12.   I don't see any cracks or damage to these and I know they were removed in the early 60s for higher hp heads. If you'd like more pictures you can call or text me at 440-231-4251. I put shipping as $75 but it will be different depending on your location.  These are heavy and may be up to $75 a piece to ship.