Mercury Inner Sleeve Variations

A “Inner Sleeve”, a thin paper sleeve envelope which protects a vinyl record, had many advertisements or technical information printed on it. There were also many variations of the sleeves, and maybe few people don't know the whole variations of the sleeves that came with Mercury (and subsidiaries) records ever.

Of course I don't know either. Anyway, here are some of the variations.

Front	Back
A sleeve that came with SR-60077, a 1959-1960 issue. The front side of the sleeve describes how 45-45 stereo record works. The back side of the sleeve introduces many stereo issues at that time (note that late issues in EmArcy were also lined-up as Mercury issues).