Hello, I bought this british battledress trousers. (left on 1st picture) I think this is a pair of p40 BD trousers, but I've seen some little difference with (my) other p40 trousers. Is it a pair of p40 BD trousers? Do you guys have more information why you think (not) so? Compared to my 1945 dated BD trousers I see that this trousers have lines of stitching around the waist. my other trousers don't have this. I know there exist p46 trousers (that are even more rare) and they have 12 buttons on the inside, but I just see the stitching of the 2 buttons of the back... Thanks for your help!