Hello, As some of you may know, I am the photographer for an estate sales company. I photograph objects on white backgrounds for e-bay, but another part of the job is photographing our warehouse or locations after they are set up for a sale. These pix are used to advertise upcoming sales. As such, I come across old photo equipment all the time, and my boss always gives me first chance to purchase anything for 30% off sticker price before the sale opens to the public. (Since 30% is usually the company's "take" for a job, his version of an employee discount is to not take the 30% for items purchased by employees.) Most of the time it is nothing to write home about, but I have got a nice Linhof III kit and an early Voigtlander Petzval this way. Today I made a decent "score" on a lot of stuff, and I am curious what exactly one of the items is. Today I got a near mint Omega B-22XL, which is a twin of the enlarger I already have. It has a better lens than mine (Rodenstock 50mm), and a smaller baseboard, which is nice. I also got a Nikkormat FT with a 50mm Nikkor-S and two Vivitar lenses (28mm f/3.5 and 135mm f/2.8). However, the real interesting thing is a very nice old leather case filled with Zeiss sheet film holders, and one object that appears to be a film pack holder. These are very slim and made of metal. I have not yet determined whether they are 4x5 in. or 9x12 cm, as the lot of them is still at the location. There is also a set of three filters. Looks like two diopters and a graduated yellow filter. I love the slim design. However, there is no ridge on the holders for a Graflok back, so I doubt that they will have any utility for me in my 4x5 camera backs. Unfortunately, the camera was nowhere to be found. Perhaps I could use them in a pinhole camera, or if I some day get the camera they are designed to fit. Does anyone have any ideas what they might be? I have attached an image of a 6.5x9 version that appears very similar (found on Photo.net, posted by Mr. Pico DiGoliardi).