Micheal R. here is the parts book which confirms that the numbers started at Number 0001.
The earliest Lynx I. that Australia received seems to be Hull No.240 with (Army Registration Number) ARN 123833. The first 15 are listed with just the engine number.(The first ARN. No123810 to ARN No.123824) and the latest Hull No.2025. ARN.123970. The hull numbers are all over the place. Just as they drove in the gate off the ship I think.
The last one listed in the ARN. books is Hull No. 1726 Serial No. 1726 and ARN.123980. That one is mine. There are another 30 spaces unfilled as if they were waiting for a further shipment. Maybe Mike C. can answer that one.
The identification Plate gives the Model. - Serial ID No.- Hull No.- Engine No. and build date with the month and year.
Above are 3 of my Lynx plates. The Identification Plate, The gear Change and info plate and the WARNING plate. The Warning plate is fixed on the drivers hatch immediately next to his right eye.
Peters Lynx may not have this plate as it has the later diffs with the 8 stud wheels and no armoured roof. the earlier 6 stud axles were a problem as they were too weak.
The 4th one, not pictured, is the Publication plate afixed to the book holder near to the drivers right knee.
The Hulls were built by International Harvester and fitted to Ford chassis. There will be an IHC stamp on the flat horizontal piece immediately in front of the armoured vertical windscreen on the right hand side, right near the outer edge. The Serial Number, Ford Stamp and build date is right near the edge on the LEFT side of the horizontal plate.
Hope that this helps although it does not explain how Peter has a Lynx with the Hull No 4225 if there were only 3255 built.
Regards Rick.