Hires Root Beer bottle, curious about age

[kentross81]

I found this bottle out in our woods, I am sure it is nothing special but I'd like to know its' age.

Google searches have not helped much, so I thought I'd join the group and ask those with experience!

Thanks for any help you can provide.

Hires
No Deposit No Return
One Pint
Genuine
Hires Root Beer
Naturally And Artificially Flavored

Bottom:
CK-18824 13 66 03. (I think, see pictures)

Thanks!

 

[BottleDiver94]

I think 1966 by the code on the bottom

 

[kentross81]

Thanks!