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Type H oxygen mask with Type 57 microphone : Royal Air Force
Heraldry
Maker: Air Ministry
Type 'H' green rubber oxygen mask with built-in Type 57 microphone. The mask is lined with white chamois leather, and has cotton web and elastic straps for attachment to a flying helmet. A 29 cm corru...REL/17907.002
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Type H oxygen mask with Type 57 microphone : Royal Air Force
Heraldry
Maker: Air Ministry
Type 'H' green rubber oxygen mask with built-in Type 57 microphone. The mask is lined with white chamois leather, and has cotton web and elastic straps for attachment to a flying helmet. A 29 cm corru...REL30808