For sale: 1 SIERRA MS-22001 size small. Mask is complete and in good condition no rips or tears ex L, Waffe 77 / 78 / 79, not easy to find in this condition, not tested. GBP 22.50 / Worldwide GBP 35. The item "Flight Helmet pilot SIERRA MS-22001 oxygenmask" is in sale since Wednesday, September 22, 2021. This item is in the category "Collectables\Militaria\Surplus/ Equipment\Helmets/ Hats".The seller is "amazingyesterday" and is located in Harlingen. This item can be shipped worldwide.