West Berlin Wall Crossing Points Routes Plane German Old Map Postcard

bg660  This is a really unique postcard - Its undated but appears 1950s - it shows the crossing routes of Berlin and the Wall - - brief details of the map on reverse - Has details on reverse for the map too so shows which symbols are sektor crossings etc. You can also see flight symbols on the amp too. Light curvature (very mild) this is near pristine unused condition (ex minus).