10 Billions Mark with snake imprint "official stamp", properly franked mass franking of 20 each values on service long distance cover the 2nd weight step from "DORTMUND * 1 r 22.1.24" to Hagen to the bureau of standards, photo expertize Dr. Helmut P. Oechsner BPP "the still used postmark from official stamps in paper currency resulted in the January 1924 despite out of course at some locations from stamp deficiency or to consumption purposes. The scarce multiple franking is in perfect legitimate condition (3 stamps defects). - a nevertheless rare like spectacular document!