Vintage Green Glass Gallon Jug, Root Beer Syrup, Mix-A-Drink Syrup Co.

This vintage green glass gallon jug with a metal twist cap has a fun label still mostly intact.  

The label indicates it contained Root Beer Syrup from the Mix-A-Drink Syrup Co, Neodesha, Kansas.  Based on the label and cap this glass was produced sometime in the 1940s or 1950's.  It is marked "16" and 7 O 7 with what I think is a "1" in the middle.  See photo. 

This is a fun find.