Hey, I have a Polaroid Cloud Filter, #516 I believe. It seems as if I made a mistake in purchasing this a few months back as it will not work on my model 220. The filter set is in very good shape- quite possibly never used. Scrutiny reveals to me only some light dust and no major scratches or deformities that I can see. It is in its origional plastic case with the origional box it came in. It should work on a number of old packfilm cameras. See this link for more details on the filter and compatibility: http://www.rwhirled.com/landlist/landacc.htm#acc-polvis I don't know how much these are exactly worth, but shall we say 15 shipped CONUS OBO for the sake of putting a number out there, or trade for a pack or 2 of packfilm. I can use square or rectangular format polaroid films. Oh I would trade for some Medium Format film, a developing tank, or changing bag as well, if you might have any such items that you can trade. I may consider any other quirky trades as well. I am most interested in trading. Please send me a PM if you are interested and I we can talk about money or trade (I prefer trade since my money will only go towards more photo junk anyway). Thanks!