I just need to know which set of GM tryouts I have. The person I bought them from didn't know anything about locks, keys, etc. and everything I turn up on the web isn't helping.


This is the only factory writing on the box.
They don't look like current GM key blanks, so I fear they may be older. I would say maybe a locksmith cut them himself from generic blanks, but there isn't one key with any stamps and they are in a box that looks factory. Obviously I can't get automotive search results here, but if someone could tell me if I have a 1967-1987 set, the Old style set B10/B11 keys (1935-1966), or something different entirely I would be greatful.
I'd post the whole set of 64 because they are so pretty, but I don't wanna push my luck.