Australian Car Number

[Tony Press]

if you have a look down a downloaded Survivors Register, you can see which cars had these. Check for things like Mulliner, GE and exports which yes, went as chassis...
I'd be interested to know how the general format looks in line with the standard car numbers for the 51xxx. It would be interesting to research how these format car numbers were applied.

Where do I find the "Survivors Register" for download?

Mark,

Check our Club website for the link to the A7CA Archive page and all is revealed including copies of Handbooks and
 Parts Lists.

The identification plate looks original- nice 'square ' corners (as opposed to rounded on the new reproductions) and held on with upholstery tacks rather than cross headed self tappers. 

The letters and numbers could be stamped - possibly with a holder so nicely in line and the plate looks similar to the originals on my 1929  Standard Sports (Latrobe) and Saloon.

This plate would have come from Longbridge with the chassis.
 
Tony.