I remember one time I ordered a trade in P220, and I must have gotten the one from the only cop that trained with it. Essentially, he must have been that department's AB. There was so much holster wear it may as well have been a two tone, and I had to get a spring kit for it to tighten everything back up. I then proceeded to add to the holster wear and wear out the new springs I put in for a while before selling it.

OTOH, I've also seen some that looked unfired.