It is the rarest of the rare due to its unusually large size, especially for Showa Godzilla posters.
Godzilla vs. Megalon (ゴジラ対メガロ, Gojira tai Megaro) is a 1973 Japanese kaiju film directed by Jun Fukuda, written by Fukuda and Shinichi Sekizawa, and produced by Tomoyuki Tanaka, with special effects by Teruyoshi Nakano. Produced and distributed by Toho Studios, it is the 13th film in the Godzilla franchise, and features the fictional monster characters Godzilla, Megalon, and Gigan, along with the mecha character Jet Jaguar. The film stars Katsuhiko Sasaki, Hiroyuki Kawase, Yutaka Hayashi, and Robert Dunham, alongside Shinji Takagi as Godzilla, Hideto Date as Megalon, Kenpachiro Satsuma as Gigan, and Tsugutoshi Komada as Jet Jaguar.
Godzilla vs. Megalon was released theatrically in Japan on March 17, 1973. It received a theatrical release in the United States in the summer of 1976 by Cinema Shares (Source: Wikipedia).
This poster is in near mint condition.
Certificate of Authenticity Included