Bren serial numbers.

[Topfmine]

Let me re-phrase that I have a Bren not DD but made just after DDs, that has all parts for that year of Bren 1941 rather than a mix of Mk2 Mk3 bits added over the years as you see on most Brens. So my Bren is mid1941 produced, the Skennerton listing is not correct.