Ah! Fido for faithful! (fidelity) That's terrific thinking, AnnaS. And how interesting that, if your guess is right, that a fido for a bad penny would be one that wasn't faithful to design, not that the roots are the same or anything like that, but I'm just enjoying the differences.


Edit: Must add the onelook.com quick definitions for 'fidelity', especially since the coin that barks is anything but:

"noun: accuracy with which an electronic system reproduces the sound or image of its input signal
noun: the quality of being faithful