I am fairly certain that this is a model III. I can’t find that designation on the camera, but it matches my research The Schneider-Kreuznach 2/50mm lens is clear. The speeds on the synchro- compur shutter sound about right. Film advance lever advances film and cocks the shutter they are working as designed. This model has interchangeable lenses available. As seen in one of my photos, the lens has its own rangefinder connected. Strangely the rangefinder covers the accessory shoe. Cosmetically, there appears to be some tarnish on the top plate it might polish nicely, I did not try. therwise this camera looks to be in excellent condition. From the Robert Shick collection
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