At 1959, Ernie. Aimar Klinan Fraise of DRT Company in Dayton, Ohio, invented the pop-top can, that is, the material of the can cover itself was processed into rivets, and then the jacket was riveted with a pull ring, and then the corresponding notches were matched to form a complete can cover.
This genius's invention made a historic breakthrough in metal containers after 50 years' long development, and laid a solid foundation for the development of can-making and beverage industry. Pop cans originated in the United States and prevailed in the United States.
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Appearance determines value.
From the collection trend, the mainstream of cans is still metal products such as aluminum and tinplate, but things are rare, and some collectors mainly collect cans with different shapes and different opening methods.
The most important thing to pay attention to in the collection of cans is the appearance. There must be no scratches, dents and scratches. Tinplate cans must not have any rust spots, and they cannot be easily collected unless they have been in circulation for a long time.
In addition, the value of some special varieties has reached hundreds or even thousands of yuan. Domestically, the Coca-Cola cans produced in China in the early days and some domestic brands of beverage cans have become treasures sought after by collectors at home and abroad because of their small survival.