Apparently it is a Feldbluse 1933 modified 1941 (six front buttons) with dark green collar added.
The Hoheitsabzeichen is a replacement as the eagle applied at the production at this time was the Feldgrau type of 1940, which was machine stitched. The Litzen were already stitched to the collar when the latter was added to the Feldlbuse. In my opinion, this example of Feldlbuse may have been stored for some time before its acceptance in the army as its markings bear the minimum/maximum height of soldiers it was intented for, a feature that appeared around mid-1943 if i'm not mistaking...Shoulderstraps may have a chance....
Once again a Feldbluse meant for taking the girlfriend out on sundays afternoons, not one that has seen Ivan in the eyes...(Feldbluse humour...)
"I didn't use any weapon in combat during the war, but i killed hundreds, perhaps thousands of men...they're now at the bottom of the sea"
Walter Borg (ex-MI6) Agent and radio operator in Malta, Tunisia and Italy between 1941 and 1945. Arrested twice, tortured twice, escaped twice, survived the war...
"The future torments us, the past holds us, that is why the present escapes us."
In Memoriam :
Laurent Huart (1964-2008)
I like it.
Thanks for the the insight and the education..
(And the Feldbluse Humour)
I am late but a good one as explained by JP. timothy