That is a very nice board. It is either a Luftwaffe Supplimental Medical Officer board, a Heer Reserve Medical Officer board(for a waffenrock), or a Landswehr medical officer. The thing that has me confused is the use of the silver toned pips. In Vol I of Uniforms and Traditions of the German Army, page 363, it states that Landwehr units utilized teh Heer Reserve insignia, but used silver metallic fixtures. I am confused because the serpent is in gold toned metal. Perhaps the pips were once gold tone and the finish faded? I love it.