https://cimg7.ibsrv.net/gimg/pprune....37817f68f5.jpg
This came up in a non-airline forum I participate in. The First Day Cover shows the routing and carriers, any ideas of the equipment? As per the thread - Suggestions Welcome!

Some info here: Experimental Airmail UK - Australia, April 1931

DRUK. Many thanks - yet again! I should probably just not bother with the forum but PM you directly. :p

https://cimg3.ibsrv.net/gimg/pprune....3038b262d3.jpg
Stumbled across this!!!

https://en.wikipedia.org/wiki/Short_Mayo_Composite

https://www.flightglobal.com/pdfarch...0-%200439.html

Ah, DR wins again! One presumes that, for take off, the Mercurey pilot had to sync throttles over the i/com? Perhaps slightly behind the main ship, to prevent pulling forward too much?

Foto at # 54
OE DBP, Stinson 108-2 Sn. 108-2436, built 1947 ex N 9463K. Reg. in Austria from 29.9.1958 till 21.1.1969

Thanks for that. I'm guessing it no longer survives.