Hey i am new to the whole mechanical keyboard stuff, and currently i just bought an ALPS glidepoint with white non-clicky alps (for $3.95 at local goodwill unused in box) and now im addicted.
Anyways i just bought an IBM model M on ebay for $20 shipped. The part no. i cannot find anything about, but this is what is on the back of the keyboard

and the front is the silver label it looks like

can someone who knows more about IBM and model M's help me please
PS i figured WTH $20 is worth the gamble for the highly coveted model M, also the fact that there is no "made in " on the label is unusual from what i have seen.