A few cans were filled prior to June 01, 1935 (like the very rare pre-tax Kreuger Ale & Beer set acquired by in January, 2007).
However, it is overwhelmingly likely that the appearance of the tax statement places the can between 19 and the lack of such a statement places the can after March 30, 1950.
The American Can Company was a manufacturer of tin cans.
It was a member of the Tin Can Trust, that controlled a "large percentage of business in the United States in tin cans, containers, and packages of tin." It was formerly a member of the Dow Jones Industrial Average from 1959–1991, though after 1987 it had renamed itself Primerica, a financial conglomerate which had divested itself of its packaging arm in 1986. Weill's Commercial Credit Company, would form the basis of what would become Citigroup.
Early flat tops often displayed a "Cool Before Serving" line on the front of the can or "Keglined" on the front of the can.