I've got a Mossberg model CC 660 Master Mag. I bought it in 1988. It is a Coast to Coast (hardware store chain) 60th anniversary special edition. I've looked around on the internet trying to find anything to do with it and can't get a hit, not for Model 660 or Master Mag. I guess I'm wondering if there was a normal 660 or 660 MM. It's a very good shotgun, just trying to find out what other people know about it. I guess a value on it would be nice too. I think it's the only one in existence (kidding).