I have a customer that comes into the club that gave me this for Christmas. He's 84 and use to be a salesman for the local Dodge dealership. He knows I'm a huge Mopar fan. He gave me this keyring. He said it was from the 60's or 70's , he couldn't remember for sure. You got one when you bought a new Dodge.The # on the back was incase you lost your keys.( your customer #) And it could be dropped in a mailbox and mailed back to the address on the back.