The name Jeicy Camera Works is found on the top cover of the Jeicy, a Japanese Leica copy made in the 1950s, of which very few examples were made. The cameras were assembled by Kumagai Genji, former developer of the Nippon wartime Leica copy. This was Kumagai's last attempt at camera production, perhaps as an individual business. The name "Jeicy Camera Works" itself did not correspond to an actual company, and was continuing the tradition of dummy names ending in Camera Works, used in advertising material from the prewar period.
- Shirai, p.25 of Maboroshi no kamera o otte.
- Shirai, p.26 of Maboroshi no kamera o otte: これはカメラ界で最後に作ろうとして果たせなかった会社の名である.
- Shirai Tatsuo (白井達男). "Nippon Kamera" (ニッポンカメラ, Nippon Camera). Pp.17–26 of Maboroshi no kamera o otte (幻のカメラを追って, Pursuing phantom cameras). Gendai Kamera Shinsho (現代カメラ新書). Tokyo: Asahi Sonorama, 1982. ISBN 4-257-08077-9. (First published in Kamera Rebyū / Camera Review no.2, February 1978.) Contains an interview of Kumagai Genji.