Incoming One-centime French Wrapper from Villeurbanne, France
Underpaid 4 centimes ['0,04' in manuscript]
The deficiency was (apparently) doubled and rounded up to ten centimes ['10' blue crayon]. Backstamped Luxembourg, October 5, 1886.
Journal La Meuse posted October 1, 1959, to the eminent postal historian, Francis Rhein, at the 40-centime [50-100 g] magazine rate, for delivery from Poste Restante, backstamped Luxembourg-Ville, October 1st, with the 1-franc Poste Restante fee paid on October 2nd with a postage due label.
Unlike letters, the early wrapper mail was usually not backstamped.