M116 with bars/lines on back

[caramelcard]

I've noticed I have several M116s with these lines or bars on them. They've come from different groups over the years. Anyone else have them on their sporting lifes?

<p align="center"><img src="http://photos.imageevent.com/caramelcard/turkeyredautos/websize/Scanned%20Image%2054.jpeg"></p>

[Leon]

Don't see any on the few I have but those marks look similar to some I have seen on T206s. Print roller marks maybe?

http://luckeycards.com/pm116x4backs2.jpg