"Quite frightening that items such as this can be offered at specialist auction houses. It currently has 11 "watchers". Here's a link to the auction:
LENNON JOHN: (1940-1980) English Musician, a member of the Beatles. Signed and…"
"Both signatures do not look genuine to me. I can’t imagine anyone having a genuine Lp cover signed by John and then not keep it in pristine condition. Unlikely it would have been in that condition if John signed it in 1980 as it…"