Hi James,
Some answers for you:
Yes, you are correct. See picture below. Plastic and metal were used in additional to cloth and metal bullion thread.
Supply and Transport units. Pictured below is the cloth equivalent mounted to a pair of tropical shoulder flashes, and also an excerpt from “Wojsko Polskie 1939-1945, barwa i broń” [Stanisław Komornicki; Zygmunt Bielecki; Wanda Boguszewska; Adam Jońca;]
Yes, these would date to late 1944 and the immediate post war years. The story goes that they are made from a supply of plastic found by the Poles after liberating an Italian harmonica factory. One of the resourceful soldiers came up with the idea of using the plastic to fashion some uniform insignia, which remained in perpetually short supply for the Poles.
The plastic was also used for other items such as cigarette cases and souvenirs such as the shield pictured below from my collection. This shield marked “Polish Army – Italy – 1944” contains full sized uniform insignia. All of these various handcrafted plastic items now have a strong collector following.
Regards,
Tony
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