Vintage 1963 Dr. Pepper 6-Pack Carton Insert Advertising Promotion, NOS, Old Stock

Here's a vintage Dr. Pepper advertising insert in never-used condition. A small quantity of them were found in an old bottling plant in great condition! These were inserted in 6-packs of the beverage and were good for 10 cents off. There's a box where the price would be marked and it says: "Plus Deposit". They were printed in October of 1963, which is indicated in the bottom left corner. Each measures 8 1/4" high by 2 1/4" wide. Nice Dr. Pepper advertising item!