This is a set of 10 German Sea Mines, ready to be used for your gauge N railway waggons. They fit into a 16 x 55 mm area.
On the bottom they are conneted with small stripes. If you want, cut them of and use them as single mines.
No assembly needed.
Use dark colours, black or any dark grey works fine.
Used with the German Navy from 1939 until 1945
More information you can get here:
Sea Mines 144 001 (rep)