Berlin Wall Construction Worker and Soldier Vintage Postcard

Vintage black and white photo postcard of Berlin Wall Construction with soldier and construction worker behind sign that displays photo and quote of Walter Ulbricht, 1961.  Card is oversized (approx. 4 1/8"x5 3/4").  Very mild edge/surface/corner wear (see scans).  Diagonal crease to right top corner (might not show in scan).  Mild darkening/streaking to reverse side (see scan).  No marks or postage.