50 Pfg European monument protection year with variety "intaglio printing missing", left sheet margin copy along with 20 Pfg industrial & technique (Federal Republic of Germany) on correctly franked cover from "MAINASCHAFF 4.5.76" to Innsbruck / Austria, in perfect condition, scarce variety, photo expertize H. D. Schlegel BPP "stamps and stamp are genuine. The cover is correctly franked franked, the quality is perfect. ", Michel 2.000.-