TTN: They come up very occasionally on e-bay and sell for quite big sums which is a pity because I would like a set for the Airfield Heritage Centre that I am involved with....complete sets are well into 3 figures. But if somebody has one that they would like to donate to a current Heritage Centre then pse PM me (he wrote in hope).
I must admit that the rank structure and badges were rubbish! Aircrew 2 had a badge with 3 stars; Aircrew 3 had 2 Stars; and Aircrew 4 had 1 star....meanwhile Aircrew 1 had 3 stars and a crown - clear as mud!!