1951 Grand Prix Bari Racing Postage Stamp on Invitation Postcard Post Card

Offering an original 1951 Grand Prix Bari commemorative stamp on a postcard. The postcard appears to be an event invitation but I am not sure of the history / context (sold as-is)

The postcard measures approximately 4" by 6"

Condition: See photos for exact condition. This item is in good condition for its age overall with some corner and surface wear throughout. There are pencil notations and stamp markings throughout. Overall, a very nice piece.