G-type oxygen mask

Kev35, you’re spot on. The microphone is secured into the mask housing by the type of clip you describe, but I’ve no idea of it’s exact name. It’s a very different set up from the later H-type. This clip also secures two “ends” of the web harness & ensures that it fits correctly when worn.

You may want to watch e-bay for this part. Sometimes a few “parts” lots are listed when the masks themselves have perished beyond redemption. Alternatively, contact David Farnsworth at http://www.historicflyingclothing.com. He may have the part you’re after or know how to source one. You may also want to post on the RAF collectors forum at http://www.network54.com/Forum/180748/

Good luck!

Rich