Thanks James!
Yup, the inch markings give the needed information!
Definitely post 1963 or so... I agree with Roger that is probably later than that circa late 1970's forward...GHC era IMO.
The post 1960's have not been considered "collectibles" up until now... so I am collecting original paper from the 1960's forward to piece it together. :)
Sooner or later, some will surface with original labels... we will be watching... :)