Color Climax numbered its film releases sequentially. Each number represented a specific movie, similar to a catalog system used by mainstream film distributors.
The inclusion of the word "portable" in these legacy catalog descriptions often referred to the media format or the equipment required to view it. In the pre-digital era, this meant: color climax film nr 1391 44 portable
The interest in the Color Climax Film NR 1391 44 Portable and similar products can be attributed to several factors: Color Climax numbered its film releases sequentially