Dodge Dart Coin Bank ID...

We bought a coin bank can today that must have been a dealer/sales item in dealerships. I paid $6 for it and will probably sit it on the front seat at car shows but for now it sits on my sons bookshelf in his bedroom. Does anyone have any idea what year this is from? I'm guessing late 60's but I would like to be more precise if possible. We found this at a bi-annual antiques show in Belton, TX at the expo center. Last year I bought some 1940's Dodge hubcaps to hang on the wall in my sons bedroom.

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