They celebrated their victory over their enemy in such a way. Chemical niello on the brass allows making an image, resistant to mechanical and thermal effects due to the deep penetrating into the metal. Only classic trench technology is used! This is converted brass item (also known as Trench Art). The item has been 100% converted and it can't be converted back into a usable item.
Made from 2cm Flak 38. Marked - 1939 and 1940 years. All components are proudly made in the Europe by Trench Art Studio. Never wash this Glass with a stiff brush or in the dishwasher.
You can damage an black coating.