You should try and post some pics of the construction of the inside of the trousers. I am just saying before the other guys tell you to Pics of the lower part of the legs would also be nice. The color looks a bit strange. Not Feldgrau or Steingrau but that could be because of the light of course.
Post#4 looks like there was a tag that was ripped out and it's whiter under it. Hole repaired in the knee...looks like they were worn a few times. Any stamps?
No markings i think its a private issue pant it looks oke to me some small repairs etc.
Nobody ? I am looking for months to finger out its originality.
My wife is a professional tailor and have given advice on forum before, so worth listening to when it comes to the craftsmanship. She says they are very well made. Pockets are "frame" pockets(whatever that means) and looks to be hand made. Basically she say they could be old/period trousers and if a repro, made very well. I would still like to see the lower part of the trousers. Is there any buttons etc.
This i do not like. I have never seen Officers breeches with zippers there. Maybe a post war modification?