Aust. One Ton trailer info. required

[Richard Coutts-Smith]

Have dragged my One ton trailer out of the shed in readiness for Corowa.
(Hmmm, just had a look and trailed equipment is 18 months away, thats forward planning.)
Anyway, now I have started on it, I would be interested on any information on the markings as this is not my field of expertise at all.
What I do know:
Corio Air Engineers pty ltd
(Geelong of course)
Built 16/11/1959
Mk 1
Chassis 1356
Contract C104053

Pic 1 It's bigger and heavier than I remember
Pic 2 Tailgate art, "QA" ?, 50 ?
Pic 3 ????????
Pic 4 Christmas Tree? Do remeber these being referred to years ago on a post, but could not find it.
Pic 5 One of these each side U/L CofG "City of Geelong"??

More to come
Rich.