The Blake's 7 Poster Magazines are not magazines as such but one huge poster sheet folded over several times to look like a small pamphlet.

On one side when not folded is a glossy large photograph or two photographs. Each folded area on the other side makes for one page (there are 8 "pages") of various information which included pictures, original fiction stories, and non-fiction articles about the show. The 8th page was always an ad to subscribe to these and the Doctor Who ones.

These are fragile and tear easily. These Poster Magazines were a nice addition to the Blake's 7 range of merchandise. 

Originally there were supposed to be more than 7 issues (the issues are numbered) but production stopped abruptly at 7.

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These B7 Poster Magazines were not for sale in the US. Americans had to buy them through English contacts.