The complete set in detail

FGU15
SG No. 2
1940 - President von Hindenburg : Overprint black "Elsaß" - black-green-blue ; 4 Pfg.

FGU26
SG No. 13
1940 - President von Hindenburg : Overprint black "Elsaß" - green and black ; 50 Pfg.

FGU28
SG No. 15
1940 - President von Hindenburg : Overprint black "Elsaß" - blue and black ; 80 Pfg.

FGU29
SG No. 16
1940 - President von Hindenburg : Overprint black "Elsaß" - yellow and black ; 100 Pfg.