Hey there. Just found a Rolleiflex 6002 on craigslist that was originally picked up at an estate sale from a deceased photographer. On the front of the camera, under the lens, it says "Service Equipment" and then under that "Property of Rollei". I have never seen anything like this on one of these cameras. I imagine this meant it was original property of the company at some point; does anyone know anything about this?? Pictures attached.