You can check this site: http://cuds-on-coins.com/washington-quarter-cuds-1932-1999/ There's probably other sites but I don't know them. Just my opinion but I don't think you'll find many cuds exactly like yours. Or any two exactly the same for that matter. Also check eBay to see if many are selling.
Interesting. Your coin isn't listed on cuds-on-coins. (btw @thomas mozzillo) that is the best website out there when it comes to cuds and die breaks. @Justinvt1 can you take better/clearer pictures of your quarter out of the flip? With a cud that big, you should expect to see weakness on the opposite side. I can't see that on yours. Here is a cent that I found roll hunting. The size of the cud is about the same as your quarter's, relative to the coin size. You can see the weakness on the reverse where "UNITED" should be.
where's the weakness on the obverse side with the cud on the reverse? I find it suspect and maybe metal added to the coin and not a cud. with a cud that big there's always a weak spot on the opposite side that corresponds to it. What's it weigh?
Actually looking at this on my computer screen vice my phone...You can see the lettering underneath where the "cud" is. IMO this is not a cud. @paddyman98
