How 'bout folks wot sez "FB of I"?

There used to be a bank in Tacoma called the National Bank of Commerce. My dad referred to it as the "NB of C" which he claimed to distinguish it from the National Broadcasting Company. I didn't see the necessity for the distinction as one would as rarely say "I am going to apply for a loan from the National Broadcasting Company" as "I think I'll tune in to the National Bank of Commerce to listen to the ball game."