Gilson Pipetman Classic P 20 (L12520D)

Description

I am. selling a Gilson Pipetman that was made in France. The black knobs both turn without problem. There are two black numbers and one red number. They rotate according how you turn/twist. the black knob. Identifying marks/numbers I see on here are that this is a:
Gilson Pipetman (Made in France)
P 20 (Bottom on white knob)
L12520D - I believe this is the part. number
9/93 Rainin