I know a very good Doubled Die on a
Lincoln Shield cent. It's the 2015
LSC WDDO-006 "Best Of Variety". The spread is easily visible, and they don't cost too much to buy etheir, since there's a ton of them available. In fact, I have many duplicates of these, and I'm willing to give you one of them for free of charge. PM me, if you're interested with your mailing address.
Errers and Varietys.