Original packet of replacement glass for the panzerschreck rocket launcher. The price is for 1 packet which contains 2 glass panels. The glass sheets are a little rough around the edges and have chips. Some of the glass sheets are stuck together. These would have been kept in the little container on the back of the Panzerschreck shield ready to replace a broken sight glass. The panzerschreck rockets burned even after they left the tube, so there was still danger of rocket exhaust hitting the operator so the shield helps protect against that. This is partly what gave the Panzerschreck its ability to carry a larger warhead than the Bazooka while giving it a good range.
