Here we have a trio of Graflex Rapid-Vance color coded medium format 120 film holders, with their matching dark slides and inserts.

we have the 6×7 cm (10 exposures) RH-10 Blue, the 6×9 cm (8 exposures) RH-8 Red, and the 6×7 cm (20 exposures) RH-20 Yellow.

these have not been film tested