Their called offset printing errors. You can google it or I can explain how this happens. 1st is a 100% print of the front image on the back. Grading is either light or dark print. I believe mines Dark.
The 2nd is the same error except its 80% of the back on the front.
Pricing varies. The first is well over $200 in average condition. Mine's crisp, no wrinkles, no wear Probably AU in coin grading terms.
The second one is same grade and I paid like $30 ( can't remember exactly, maybe more)) because it's lighter print and not 100%. I'll have to look at current E-bay bids. Also there's a book called The Black Book of U.S Paper Money and their listed in the back under errors.
The 2nd is the same error except its 80% of the back on the front.
Pricing varies. The first is well over $200 in average condition. Mine's crisp, no wrinkles, no wear Probably AU in coin grading terms.
The second one is same grade and I paid like $30 ( can't remember exactly, maybe more)) because it's lighter print and not 100%. I'll have to look at current E-bay bids. Also there's a book called The Black Book of U.S Paper Money and their listed in the back under errors.
