Damage On Mailometer Stamp

This Mailometer stamp has an irregular top edge. Could this damage have been caused by the Mailometer machine?

Perhaps this was from an over-zealous set of scissors that cut the stamp off the envelope before soaking?

Yes, probably. They are pretty scarce over here, in fact this is the first one I see in person. There are quite some in ebay US , but none with a similar irregularity. Thank you for the input.

re: full height
I would start by comparing this stamp to another vending coil. Two scenarios come to mind:
1. The left side is "full height" which would point to damage, more likely by the recipient or a later salvager/collector after exiting the mailstream rather than during the mechanical coil application process.
2. The right side is "full height" which would point to a sudden paper buckle in the coil stripping process, likely from an edge row of the paper web..

Very well but as I said I never saw one in person at coin shows and this is the first and only one I got now. US stamps are not abundant here on the European continent.
I will have to watch out and wait for another one.

Well, after a 40 year collecting hiatus a was not aware that I own two more of the type.
Comparison shows that the "nose" on the upper margin is not the remainder of an over-zealous pair of scissors but looks like surpassing full height, John's number 2 scenario. Thus not a damage but worthy of keeping.

An excellent follow-up image!
It will be interesting to see additional observations from others.