The world through rose colored glass

This set of Wratten Contrast Filters, stamper, Commercial Photography, Eastman Kodak Co, Rochester, N.Y. was made about 1910. Originally a set of 8 filters 4 inches by 4 inches, but one filter is missing. For use with black and white film, they are becoming a filter of the past. They are housed in their original box which is well warn on the edges. The box is covered with the black paper used on the box cameras of the period. Inside the lid is a small hand written label which gives the Reference number for the set "L/13771/10". I have cleaned the filters and found them to be useable and made from 2 pieces of glass with gelatin sheet between the sheets of glass. I have taken a couple of 4x5 black and whites with the filters and they worked fine. If you look at photo 1, the universal holder which came with the set in on the front element of my 10 3/4 golden Dagor. I enjoy using this set set my only fear is dropping a filter. Hardbrake