Rolleicord Ia Model 3 - 'Police' Model K3 541 camera 1939 Zeiss Triotar 3,5/75mm

Sold as is. Let me start by saying that I am not an expert. I did a lot of research on the Internet. There were quite a lot of models produced. According to my research, it turned out to be this model: https://offerup.co/faYXKzQFnY?$deeplink_path=/redirect/ I am attaching the website from which I took it and a photo of the description of this model. If I'm wrong and you know what model it is, write to me. I don't know if it works, probably yes, but I have no way to test it. You buy as is. Rolleicord Ia Model 3 - 'Police' (different lenses) Model K3 - 541 From January 1939, 500 pieces. Serials: 611.000 - 1.042.100, engraved under Rolleicord name plate. Taking Lens: Zeiss Triotar 3,5/75mm, screw mount filter. Finder lens: Heidosmat Anastigmat 3,2/75mm, screw mount filter. Non interchangeable focusing screen. Shutter: Compur C00, 1 - 1/300 sec., T&B. Film: 6x6 (120), 35mm adapter Rolleikin I, sheet film adapter. Measurements: 9.3x9.5x13.5cm Weight: 745 grams I have no idea how to work this camera so I don't know how to test it. Camera is sold "as is" due to this. You are buying what is in the picture. There is no box or certificate. It comes from a private collection bought