ID plate. It is faded and difficult to read, but it appears to read:
Part Name: Chamber Furnace (unintelligible, but possibly "Brazed Assy")
Part No: 209202-21 (unintelligible, but possibly "XZ")
Contract No: 088710
Serial No: 4092941
Time picture taken
Thu Jul 31 15:14:04 2008
Location picture taken
Open-Air Exhibit Gallery
Science Museum Oklahoma (formerly the Omniplex)
Oklahoma City, OK