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-80015, a 1958 issue. This type of inner-sleeve came with the earliest releases of EmArcy and Mercury records. “HOW MERCURY HI-FI STEREO IS RECORDED” on the front side, while “HOW YOUR HI-FI STEREO RECORD WORKS” on the back.