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 MG-20473, a 1959-1960 issue. Resembles to the previous sleeve, but the jacket lineups printed on both sides are different.