Grandpas bills: 
Belgium
Belgium pick 108a: 5 Francs from 1938
1.3.1938-11.5.1938. Blue on light brown underprint. Portrait King Albert and Queen Elisabeth at left. Like number 93 but with overprint. 2signature varieties. Back: Seated man looking at factory scene. Overprint: TRÉSORERIE - THESAURIE on face.
Other Info
Condition:
Unspecified
Also Owned By:
Belgium pick 122a: 10 Francs from 1943
1.2.1943 (1944). Green on light green and light pink underprint. Printer: TDLR (without imprint).
Other Info
Condition:
Unspecified
Also Owned By: