A black Panzer wrapper. This type was only issued by Waffen-SS troops. It has no vertical seam to the back and is designed slightly differently to the front side as well.
All insignia are missing. You can cleary the see the shadow of a sleeve and and formerly attached collar tabs. You can also "guess" some traces of a breast eagle. Maybe a collector had displayed this tunic with Army insignia not know better that it is an SS type. There are three pair of award loops which were also certainly added by a collector after war.
