チャレンジャー (Challenger)

Name: チャレンジャー (Challenger)
Year: 1969 or earlier (maybe 1966?)

Manufacturer: unknown - maybe 日本展望娯楽社 (Japan Outlook Entertainment Company) - maybe 中村製作所 (Nakamura Seisakusho)

This is tiny photo of an arcade included in a hotel brochure, but in the lower right we can see... Challenger!

Namco is a company that seems to care about their history, and has published a number of articles and books that give overviews of their history.  I have made a list of the few 中村製作所 (Nakamura Seisakusho) games that I have not found any pictures of.

The game チャレンジャー (Challenger) is always given as 1966 on their list.  Could this be the Challenger they refer to?  

from the Namco Elemecha Encyclopedia

from "Namco Museum"

The 1972 directory lists this game as by 日本展望娯楽社 instead, but it's hard to corroborate that information.

This machine appears in the 1969 Machine Directory, as well as the 1972 one.

The 1969 list has an index at the back with some company information.  Both 日本展望娯楽社 and 中村製作所 are listed, but neither have Challenger listed:

日本展望娯楽社 - 1969 directory

中村製作所 - 1969 directory

These lists are not comprehensive, and sometimes they include machines that they are selling but did not manufacture.  It differs from listing to listing.

The 1972 machine directory has a few sections with company information.  

日本展望娯楽社 - 1972 company listing

日本展望娯楽社 - 1972 price list

中村製作所 - 1972 company listing part 1

中村製作所 - 1972 company listing part 2

中村製作所 - 1972 price list

None of the above listings show チャレンジャー.

There is a page index that lists チャレンジャー as by 日本展望娯楽社

1972 - machine directory index

Is this machine actually by 日本展望娯楽社 like the directory says?  If so, where is the 中村製作所 Challenger?

I wish there was corroborating evidence.