These are color correction filter lens caps custom made to fit on any 16mm projector (cap color may vary).  THEY ARE MADE TO ORDER AND TAKE 10 DAYS TO PRODUCE AND SHIP.    I can make one to fit on any projector stock or scope lens. Each cap comes with three lens filters, two lighter and one darker that are interchangeable, see picture of cap & filters. This allows you to combine the filters to get the color correction needed on prints with varying degrees of fade. 

There are actual screen shots taken by me, of prints in different stages of fading above.  The first shot of each frame is without the filter and the second is while using the filter.  As you can see the filters really work great!  Please call Rick at 5135353308 with any questions.  

My color filter's are GUARANTEED to help the color of faded prints or you're money back!  

International buyers welcome, please use shipping calculator for cost before bidding.  International buyer is responsible for all duties and terriffs due.