Boeing 727 Copilot side Diluter Demand Oxygen Regulator Control Panel as shown on photos. Manufactured by Scott Aviation. P/N 28000-1. Boeing P/N 10-60887-2. It came off Eastern Airlines N8173G Boeing 727-25C. Also served time with Fedex and Interstate under the same N number and UPS as N932UP. Removed from a retired aircraft. Sold for display only, as is, no returns will be accepted.