C166009-0201, C166009-0310, Nos Cessna Aircraft Pilot Oxygen Mask

New, / nos, Vintage Cessna Aircraft Pilot Oxygen Mask. Used on the early Cessna non-pressurized aircraft. Assembly P/N C166009-0201. Flask P/N C166009-0310. It is in excellent condition, new old stock surplus item, still in the original package. It would make an excellent show item of the office or home. Sold for display only, as is, no returns.