What's Different?

I won't speculate, but I understand the basic mechanics of it. It would make sense that the feeder gets caught by the anvil die as the feeder is pulling away. But I couldn't say whether it's an instantaneous process that occurs in the blink of an eye, or if perhaps the feeder causes the dies to jam and then it's ripped away from between.

But, if this helps, of the feeder fingers (actual feeders, not coins) that I had that were struck by the die, there was a planchet struck INTO the finger, resting on top of it. The obverse was struck by the anvil die and the reverse of the token was an imprint of the bolt it came to rest on. Really wish I still had it to show.

I would hazard to assume that the FF damage that we see on dies, generally doesn't involve a planchet, as the steel of the finger is hard enough to cause a harsh scrape on the steel die, but not copper or zinc.

Actually, I see these fairly often and toss them back, unless they are really extreme. But, this is the first one that I've seen where there was a significant area scraped besides just gouges.

Here is one of zeewool's pics:

I wouldn't expect anything less from you Wolf.