This cardboard badge was printed after first world war to support scientific research in medicine and Pasteur works on vaccination
Obverse : bust of Pasteur, signed by Besnard
Reverse : "journée Pasteur / mai 1923 au profit des laboratoires / sans laboratoires les savants sont des soldats sans armes" (Without laboratories scientists are soldiers without weapons)
Size : 44 x 38mm or 1,75 x 1,5 inches