I recently acquired an older paper label 7 oz 7UP bottle. With all the "reproduction" labels available for sale I'm concerned about the authenticity of the bottle (if the bottle is the same time period as the labels) The glass manufacturer markings on the bottom of the bottle appear to be an intertwined "VS" with the number 2 below the "VS" and the number 64 above the "VS". There is also a very small square logo that looks like a maze (I tried uploading a couple pics but keep getting error message file size too big) I haven't been able to find any information on that marking (glass manufacturer or approximate age) Can anyone help? Thanks!