3 Aust A/T Regt Vehicle numbers

[Tony Smith]

Mike Cecil's profiles on Field Artillery gives Census numbers for AUSTRALIAN BUILT LP3 and LP3a Gun tractors. These vehicles were Aussie built and never sent or sold to Britain, yet they have H class census numbers in dribs and drabs! If Australia was building a new class of vehicle, why would'nt the numbers be sequential from 001. Could the AIF be using WO census numbers allocated from Britain? The gaps in the numbering could be vacant numbers in the British vehicle fleet, issued in blocks by the War Office for use by the AIF.
If that was the case, the presence of a WO census number on an AIF vehicle might have no relationship to wether that vehicle was ever a part of British stocks, although some were obviously ex-British.