Vintage WWII German Luftwaffe Großes Brückenraumglas Stereo-Optic Device For Sale

Vintage WWII German Luftwaffe (Air Force) Großes Brückenraumglas-which translates to large bridge room glass, a stereo-optic device used to view aerial photos- made by Schneider-Göttingen. These are NOT binoculars. Included with wood storage box , Aufbewahrungskasten, is a table of inventory (typical German way of stock-part numbering, the stereoscopic glass + mounting carries a GAF stock number Fl38460 & Fl 38461), a folding metal tri-pod bridge and the device itself. Visible oxidation through-out the bridge and the device, and handle on the box was broken at some point. Box measures approx. 13 1/2" x 7" x 7 1/2". Metal bridge is 25" x 6" unfolded, and device is 9 1/2" x 4 3/8". I have not tried to alter or clean except to give it a wipe down.