How many of you didnt even notice http://www.coinworld.com/news/national-park-quarters-set-with-misprinted-certificate-of-authen.html
So since it's just on the COA or paperwork, it wouldn't technically be an error coin/set right? It seems silly that it'd be worth more for a mix up of a 2 and a 6.
Well to me it would depend on. How many misprints there were. Theres alot of wierd collectors out there