Deciphering Space Saver Bottle Date Codes

Anyone know the date code breakdown on 70-71 space saver bottles? Thanks!

That may be a vendor code.

Good point Snoppy. It looked like the font and position on the bottle from others I had seen...or at least that's what my memory tells me! LOL That same sketchy memory tells me that they were four digit date codes? month-year? I'm losing it in my old age.