Hi there, decided to register and see what you think of my coins. https://picasaweb.google.com/117957493874677503426/Coins Error 1964 nickle: Not sure what kind of error this is, the edge is sticking out. Only goes along about half the coin. Quarter, looks like a die chip error. 1987 I think will double check if it matters. Old picture, sorry for the crappyness. I've had this one for ages and, it's probably worthless but what do you think? Also check out my other coins in the linked near the top, got a half penny from Australia, and a buffalo nickle.
Your nickel at the top looks like it may have a "railroad rim". If so, it is caused when the retaining collar in the striking chamber doesn't seat properly, and some of the metal flow extends beyond the edge where the collar should be. I can't tell anything about the quarter from the photo, but die chips are fairly common and unless they are extreme, it doesn't add a premium to the coin. The Imlay City "half" is actually a "Good For" token, but I can't tell what the damage is from the photo. Chris