The Porst Chrome X 200 is a slide film. The film was sold by Photo Porst. It probably contained the Sensia 200 from Fujifilm.
The nominal speed of the film is given as ISO 200. You can make color pictures with it. Today, you should overexpose the film a bit. Since the sensitivity of film material decreases over the years. The film has been developed for photos in daylight.
It has to be developed in the E6 process. After development, you get back classic color slides. These can then be scanned or projected. The slide film was made for the 35mm format.
