The complete set in detail

R467
SG No. 490
1933 - Opening of the Reichstag in Potsdam, Frederick the Great : Watermark 'mesh' - green ; 6 Pfg.

R468
SG No. 491
1933 - Opening of the Reichstag in Potsdam, Frederick the Great : Watermark 'mesh' - carmine-red ; 12 Pfg.

R469
SG No. 492
1933 - Opening of the Reichstag in Potsdam, Frederick the Great : Watermark 'mesh' - ultramarine ; 25 Pfg.