Thanks for the info John. When I first found it I thought it was a lid to a soup can, but I saw the raised lettering that sais "60MM Mortar. Yeah, that makes sense that it is part of the container that stores the mortar. Have you ever been to Bastogne? I was over in Holland for work for 5 weeks and only had to work 2 mornings a week, so I had a lot of time to travel around. I went to Amsterdam, Utrecht, Arnhem, Oosterbeek, Nijmegan, Eindhoven, Son, Best, Margraten (American cemetary),Maastricht, Grosbeek,Aachen(Germany), Liege, Bastogne, Foy, Noville, and Houffalize. I had a great time visiting all the WWII museums and memorials over there. It is a shame that it took this long to get a nice WWII memorial here in the US. Bastogne has a huge US memroial, ever see it? Well take care.