Marvel Superheroes Secret Wars UK

 This little card thing was nestled in the pages of Marvel UK's Secret Wars comic #1. I seem to recall it was included with a few, if not all the Marvel publications that month. The reverse is blank/grey. 

UK Marvel ads

 I found a pile of Marvel UK Transformers comics circa late 80s, and scanned a bunch of the ads off the back covers.

BONANZA PRIZE TIME! Spider-Man Weekly #85 Sept 28 1974

The back cover of this issue featured some superb prize winning entries for a Grand Gizmo competition.

Marvel UK Savage Sword of Conan #1 November 1977 back cover pinup by John Buscema

Marvel UK Spider-Man Comics Weekly ads

Advertisements found in early issues of Spider-Man Comics Weekly.

MWOM pinups

A few pin-ups from early issues of Mighty World of Marvel (UK 1972)