Originally Posted by
SpazSinbad
...Sandy's son has sent me Sandy's CATERPILLAR CLUB membership card & MB certificate for ejection No. 129 (also the first MB ejection at night in OZ).
I'm guessing this graphic is a Caterpillar Club badge sent with the certificate photo however not knowing the context or what this graphic (the badge) looked like in a poorly colourised photo, the whole thing was made greyscale. Reading the Caterpillar Club badge description I am guessing this is the badge (but again poorly colour enhanced by me). [EDIT] According to the AWM jpg my guess is not accurate, the AWM jpg is untouched by me.
SDF description above: "...
Irvin (and associated Airborne Systems/Irvin GQ) Caterpillar Club pin brooches were all originally gold (later gold-anodized, and latterly gold-coloured metal) with red eyes (originally supposedly rubies, then garnets, later red glass and now red-enamelled); with the name of the recipient stamped on the rear. Some of the gold finishes do wear under heavy polishing, giving a silver appearance...."

The Australian War Memorial website has this photo:
4222522.JPG (640×355)