The bike was demobbed in 1954. Both engine and frame numbers are the same. I am not sure it ever saw over seas service. There is a 16h at the Canadian War Museum in Ottawa that was built 28 bikes before mine, in the same contract.
There is one on Rob's Norton site built a few numbers after mine in Italy, so I am not sure how to track down that information.
Steven, myself and others have used the Royal Enfield side stand clip which I think is near identical. Available from Hitchcock's for a few quid. Click on No7. Ron
If I cast my rivet-counter's eye over things (I don't have any other, to be honest) a Lucas HF1235 horn instead of the modern 6v item would add to the period effect and you have a later long dynamo and MCR2 regulator...both of these could be made less obvious by painting (black for the dynamo and service colour for the regulator cover).
There are those here who are not immune to the charms of brass components but the regulators were always painted.