Hey Eric,
Thanks, the second buckle looks like the double coat of arms buckle that has been reported to be a fantasy peice, I have seen examples that I believe to be old, and a period photo would support their authenticity. The last buckle looks like a plane brass buckle, which I have recently seen for sale as an unknown buckle. The cord on the trousers also show up better in the enlargments.
Best wihses
Gus