DLV or NSKK brocade

[planet]

Hello,
would like to hear experts opinions to this brocade. According to Angolia it could be a 1st pattern NSKK brocade (2nd edition, page 246 and 637). Because the backing of this brocade is dark blue instead of black, it also could be a DLV brocade.
The brocade itself has many signs of originality: it is oxydized, the leather tongue is already stiff, material is the way it should be.
What worries me is the buckle. All other brocade buckles of this kind I know look different. I mean, the material looks like casted, not pressed. The details are not as sharp formed like on other brocade buckles I know. The other thing is the very wide clamp on the side, where the buckle is sewn together with the brocade. It looks strange on a parade brocade. Usually the clamp is only as wide as necessary to let the brocade go through it. It just does not look good and I wonder why they should have produced something that looks that way back then, esspecially for parade purposes.
You can sometimes see such a wide clamp on leather brocades like for justice officials or forestry officials, but not on parade brocades. At least not that I know.
On the other hand it is hard for me to believe, that fakers only produce a handful of buckles, esspecially from brocade buckles, that are not sooo hard to find. If it were a fake, You should see them more often, I would say. That's why I would like to see other examples of such brocade buckles from other collectors, just for comparison.
So does anyone of You guys have ever seen such a buckle or has someone one in his collection? Or can You say for sure it is a fake one?
Opinions very welcome.
Regards, Thomas