How old is reed and bell root beer?

it is as old as the company makes it (right off the shelf, etc.)

Fogifi...

Hires introduced root beer to the public in 1876 at the Philadelphia Centennial Exhibition. In no time, it became a popular drink of its day. By 1893, the Hires family sold bottled versions of their well-known brew, sealing their place in rootbeer history.

The right answer ^^^^^