Looking for a privy mark, I just went through 10 Loomis wrapped rolls and found about one roll of these. Does this look like a strike through to you?
Looks like a Struck Through Debris (grease). They could be a variety now that you have a whole roll of them.
Agreed struck through grease. A "variety" and an "error" are two different things. A variety is a variance with the die - a crack, a scratch, something like that. Every coin struck with the variety will be the same. This struck through grease will be different on every coin... sure, he could come up with a clever name and try to market it since he has a bunch of them. But, let's be clear with the vocabulary, please.