Going thru a huge collection of a friend. Found this 10. Something doesn't look right. and no, I didn't circle them.
Some fine work with a pen on the big zeroes? This made me pull out my wallet to check what the back of a 10 is supposed to look like, but I've got only the new style. Edit: yep, I see what they did there.
A novelty for sure. Made me do a double take before I figured it out and was confirmed by following posts.
May I suggest, without any reservation on your behalf, that you make an immediate appointment with a good eye doctor? No offense intended. Lol
There was an article on these in Coin world back in the 70's. It was a very poor way of trying to pass a 10 dollar bill as a 100 by coloring in the center of the numbers with a pen or pencil.