Expiratory Valve Oxygen Mask Pressure Compensating 6D/1758 1961 Royal Air Force Air Ministry Royal Navy Fleet Air Arm Vintage Aircraft Spare Part.
This will fit type A13A masks but not sure about others.
Text on unit reads:
R.A. HAWKS DIV. SIERRA ENG.CO. SIERRA MADRE. CALIF.
MFR. PART. NO. 156 S/N ******************** (number will differ)
MIL-V-2512A MFD. ******* (date will differ)
VALVE-OXY. MASK EXHALATION PRESS COMPENSATING
New old stock. Although unused these have been in storage for many years so may show some minor surface oxidation. You will receive an item in unopened original packing. Sold untested for display only and "as is".
Great item for display or as part of a steampunk / aviation themed project.
Always willing to combine postage. International enquires welcomed, ask for postage quotes.
Many more vintage aircraft spares available from our shop! If there is something in particular you need please get in touch.