Twin-cylinder four-stroke air-cooled rebirth of a Ducati 500SL

These are the markings on the stock seals from my Marzocchi M1R forks.

(in order of assembly)

Dust seal: Marzocchi 41.7 Rolf 4

Metal washer

Stop ring

Oil seal: Marzocchi 3 41.7 55 10 10.5 RP Rolf