Could you please show us close up photos of the piping the band. Wondering about material structure.
My only concern is the machine sewn lining on pre war - dunkelblau krätzchen.
Machine sewing was used during the war, to speed up and improve production process. There are many examples of...
The color for DR 7 looks absolutely correct.
Below is comparison of the feldmütze's band, from my collection
..........................................Drag. Regt. 7.......................................................................................................Inf. Regt. 131
Cheers...
I think Poland brought back one Renault FT Tank from Afghanistan as well. It was few years ago.
There is short article about it.
https://www.militarytrader.com/mv-101/historic-tank-to-return-to-poland-from-afghanistan
In 1920 that type of tank was successfully used by Polish Army.