Hello fellow TNers.
The picture below is of a thing I found yesterday at my favorie hunting spot, a coastal WW2 german bunker.
It's like a ring with an internal rim that holds a black rubber disk with a cental hole, like someone has pierced it. It's made either of copper or brass/bronze, 2,5 cm in diameter, 1,3 cm high but it looks like it has been hammered on the top side...
There are some markings reading "RYW", then a circle with a center dot like a target, "KIWA NF 22", where the "NF" (? I think...) is in an oval frame.
This item could be some tossed modern junk, I have no clue, somebody suggested that it could be part of a flare.
Any help appreciated.

The picture below is of a thing I found yesterday at my favorie hunting spot, a coastal WW2 german bunker.
It's like a ring with an internal rim that holds a black rubber disk with a cental hole, like someone has pierced it. It's made either of copper or brass/bronze, 2,5 cm in diameter, 1,3 cm high but it looks like it has been hammered on the top side...
There are some markings reading "RYW", then a circle with a center dot like a target, "KIWA NF 22", where the "NF" (? I think...) is in an oval frame.
This item could be some tossed modern junk, I have no clue, somebody suggested that it could be part of a flare.
Any help appreciated.
