A CE block is a Chevrolet Engine replaced under the 5/50 warranty of the day. The T059 date code at the starter flange is consistant with this type of component if it was an assembled block and as Jerry said is Tonawanda Month/Year. I dont think that the "7" is really a seven but instead a mark it picked up inadvertantly that looks like one....I mean a seven
The pad most likely had an ole fashioned blanch decking. The code for a CE warranty block from Tonawanda would read something like CE95xxxx if it was still there. Nice block and date pending a tanking and flux regardless.