"Saucer Smear" was a long-running newsletter published by Jim Moseley. It has been described as "unmatched as a running, 'as it happens' social history of ufology ... a gold mine rich in saucer lore, fact and fantasy, feud and folly" (by Karl Pflock, in an introduction to a book that he co-authored with Jim Moseley, "Shockingly Close to the Truth").
James Moseley's sense of humour renders it difficult to give a brief summary of some basic details such as the number of issues of "Saucer Smear" or the date it commenced publication. Moseley's "Nexus" was published in 1954-1955 and the numbering of issues continued with his next publication, "Saucer News", which ended with Vol 17 No 1. Moseley then took a break for about 6 years and when he recommenced publication of a UFO newsletter in 1976 he began with Volume 23 "in a bow of sorts to consistency (and confusion), and assuming one volume per year", stating that "I'm not at liberty to reveal why the first issue in the volume was numbered 16". He then went through a period of changing the title of the newsletter with almost every issue (from "Saucers News" to "Saucer Muse" to "Saucer Zoos" to "Saucer Grus" to "Saucer Clues", etc etc etc etc) before settling on "Saucer Smear" in 1980. The second issue of in this new series implied that the name change was due to Gray Barker having insisted that he owned the rights to the name "Saucer News", but in an interview at the link below James Moseley suggests that this was a joke and the two of them having a bit of fun.