Old beer can

[Rubicon]

I found an old beer can (nothing new there) which had an aluminum top you had to open with a can opener. The side wall was apparently tin as this was rusted away. A locally brewed beer, Gibbons appears on the top. Can anyone date pre pull tab beer cans?
Thanks

 

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[jeff of pa]

are you talking Flat top ?

50's & Early 60's

 

[Rubicon]

are you talking Flat top ?

50's & Early 60's

Flat top, yes. Made from aluminum with the Gibbons logo in red lettering.
Thanks!