Here is "Spec" magazine, issue 8 from 1992.
It's a Japanese multi-console coverage magazine. Isn't the plain cover interesting? It has just Sonic, with no background, and no pop-in art from other games or anything else at all. A red headline goes down one side & 3 game titles are just mentioned in plain text (no logos) at the bottom over his shoes. Shining Force, King Colossus & Super Monaco GP1 would also be included with the Sonic coverage in the magazine. It stands out due to how plain & Sonic-focused it is.