Bendix Aviation A-9A Oxygen Regulator gauge 1965 for parts For Sale

This item is listed as "used" ...ButI do not know if it is in working order it is being sold for parts or not working!!! A project fixer upper. It is in good collectible condition what you see is what you get. There is normal signs of wear like dust and scratches

Aircraft Part Bendix Aviation A-9A Oxygen Regulator Airplane Gauge.