Price: US$ 42

• Ground Support Equipment (GSE) microporous filter for the LM.
• Sliding metal tag is etched, ”COMPRESSED GAS, HELIUM, PHDAN, LDW430-62230-55.” The LDW number is a Grumman number for the Lunar Module Program.
• The filter itself is etched with part numbers and serial numbers.
• An etched arrow shows direction of flow.

• This item came from the Charles Bell estate. Bell was a NASA employee at the Kennedy Space Center and a lifelong collector of space artifacts.