These are a pair of keys that work for Circa 1958-1963 Fender guitar cases, possibly earlier. 
There was some variation during this period.

These are the keys Fender used before switching to Cheney latches around 1964 or so.

These are real 55-60 year old keys that have been in storage and look new.

Please look at the pics.  If you have locks like this, these keys should work for you.
The key fits in the plate of the lock, not the button.  This key will not fit locks where the key is in the button.
This key has worked with every lock I tried it with that was like picture #4.
 
100% refund if the key does not work. 

Nice for your vintage case.

I accept all forms of Paypal and I will ship this immediately.