Sunday edition CALENDAR SECTION only of the Los Angeles Times, Dec. 23, 1985 

* Best "The Godfather Part III" film advertisement
* Pre-Grand opening day movie premiere review
* Francis Ford Coppola - Al Pacino

Often revered as the undisputed "bible" of Hollywood, the Sunday Calendar section occupied a rare space in journalism where a single publication could simultaneously dictate global entertainment trends and govern the inner workings of show business. Today, physical copies are an absolute rarity, largely because they were printed on standard, ephemeral newsprint designed to be devoured and promptly discarded at the end of the week.
Pages 12 & 13 has a nice double-page advertisement for the opening day premiere of the film "The Godfather Part III" with the first showing 2 days later. (see images)
And page 9 has a pre-opening review of the film with a few related photos.
I suspect this to be an extremely rare item because their was really no reason to save it at the time.
Provenance note: This issue comes from The Los Angeles Times own archives, part of their in-house collection used to create their digital archive. Rare as such.
Complete Calendar section only with all 108 pages, tabloid size, great condition.

Background: The Godfather Part III had its wide theatrical release on Christmas Day, December 25, 1990. Paramount Pictures deliberately chose the holiday release to capitalize on the season’s strong box office and to ensure the film’s eligibility for that year’s Academy Awards. The premiere and Christmas opening brought together key cast members, including Al Pacino, Diane Keaton, Talia Shire, Andy García, Joe Mantegna, Eli Wallach, and Sofia Coppola, marking the final chapter of the Corleone saga. On Christmas Day, the film opened on roughly 1,800 screens, earning approximately $6.3–$6.4 million, setting a record for a holiday opening at the time. The premiere was accompanied by extensive media coverage, red-carpet appearances, and fan excitement, reflecting the cultural anticipation for the conclusion of one of cinema’s most iconic crime sagas.