Cased German mortar sight RA35

Beautiful cased German mortar sight for the Granatwerfer 34  or s.Gr.W.34, the main mortar for the German army during world war two. The sight is in good condition with moving parts. The sight comes with its original case in tan paint. The Case could be cleaned on the top with oxalic to great effect, but I left it as is for now. The set was recently found in a household clearing and has never been in a collection before.