Total of 4 

Used B+W series 5.5 filters for Leica Summicron-C 40mm f2 lens. 

Colors are: Quantity 2: 023 (orange). Quantity 1: 021 (green/yellow). Quantity 1: 041 (red/orange).

 They are used filters with good, but not like new (see photo for condition). 

The series 5.5 filters are held in by the lens shade.