ok the 2 dots I did not know that. learned something new today. I think its a 1970 block, reason being all the main bearings were dated 4 of 1970 and all of the rod bearings were 10 of 1969 so imo it should be a 1970. not that it matters it is just going in a street car. just waiting for the magnaflux and sonic check before I send it out. cross my fingers