Tiffen Professional Series 9 Red R-1 1/2 R-3 R-6 R-12 Drop In Filter Set V13

This set of vintage Tiffen Professional Series 9 drop-in decamired red warming filters are 82.6mm or 3.25" each in diameter. Included in the set are R-1 1/2, R-3, R-6, and R-12 filters. They come in a filter case and appear to be unused.