Here's one with several small laminations going with the grain. What a difference going from a full-spectrum neon to an LED frosted lightbulb makes on the 3rd one. (real colour in hand is like the 3rd)
No, they came from the mint like that ... I have a number of them. It's my opinion that it was caused by a final wash/rinse that they received coming down the line before they went into the bins. They are quite common for post-WW1 Geos, but I've seen Eds with them as well.