G&F M-422A two different technologies or fake?

[Eastwood]

Most jackets G&F M-422A stitched both the upper on photo. They show – front half is sewn to the back half.
There are jacket like the below on photo. The back half is sewn to the front half. It does not depend on the contract.
Question – jacket, on the bottom of the photo, authentic? Why two different technologies?

 

[Eastwood]

Really no one knows? But this is the only one G-1 jacket of WW2, that suschetvuet at auction in two modes of production. Why?

 

[Stearmen]

I am not sure what has happened to this sight, but it seems all our experts have disappeared lately! Wish I knew the answer, but I do not, sorry!

 

[Eastwood]

Found out the answer to the question. Jacket second version G&F M-422A is not fake. Version two technologically sewing easier and cheaper. Therefore, the later jackets were made in version two. Early jackets G&F M-422A were made in version one. Thanks to all..

 

[Colonel Adam]

Found out the answer to the question. Jacket second version G&F M-422A is not fake. Version two technologically sewing easier and cheaper. Therefore, the later jackets were made in version two. Early jackets G&F M-422A were made in version one. Thanks to all..

That's more or less what I was thinking. There were a lot of different manufacturers making the same things, and the had slightly different ways of doing things. And like you just mentioned, things changed from time to time.