Just before leaving for my doc I threw all my change ( it's considerable) in a bag and said to myself I give up on errors. I get to my doc and this is sitting on the floor directly at the couch...is it anything?
Are you referencing the line running from the shield to the rim? Looks like a little bit of oxidation.
Errors are difficult to find in circulation but you can find a number of varieties. The hunt itself is fun but usually not rewarding. It's a 2020-D which is nice and not in bad shape either. It's also Zinc so that spot on the reverse may be a plating blister.
