1966 Periscope - ペリスコープ by 中村製作所 (Nakamura Seisakusho)

Name: Periscope - ペリスコープ
Year: 1966
Manufacturer: 中村製作所 (Nakamura Seisakusho)

Namco has done a great job advertising their history, but through their publications many errors have cropped up.  I do not think this is the 1965 "Torpedo Launcher" version in this image.  For whatever reason, it might have been easier for them to just collapse the more complex history into one single entry.

the caption says "this appears to be from a vendor show" [Sawano, 2017]

can you understand the blurry text?

photo from 1967, taken from Who Created Periscope?

1969 Machine Directory entry

The Periscope series:

1965 Periscope - 魚雷凳射機 (Torpedo launcher) by 中村製作所 (Nakamura Seisakusho)

1966 Periscope - ペリスコープ by 中村製作所 (Nakamura Seisakusho)

1966 Periscope - ペリスコープ by セガ (Sega)

1967 Periscope - ペリスコープ by タイトー (Taito)

1960s Submarine - サブマリン by 三共 (Sankyo)

1960s Sonar Attack - ソーナーアタック by 三共 (Sankyo)

1960s Sonar Attack [single] - ソーナーアタック by 三共 (Sankyo)

1968 Periscope [single] - ペリスコープ by セガ (Sega)

1968 Sonar Attack - ソナーアタック by さとみ (Satomi)

1976 Sonar Attack - ソナー・アタック by ユニバーサル (Universal)

1978 Submarine - サブマリン by ナムコ (Namco)