letter scale

Probably this pocket letter scale is a promotional article of Quelle from France. On the scale is the name:
QUELLE and below this
NON VERIFIE PAR L'ETAT (= not verified by the state)
No. 86.3.07.625.1.0 probably a registration number of the model
DU 13.11.86 and this is the date of registration
The weighing range is 80 grams, up to 40 grams there is a stripe of measure per 5 grams. Above 40 to 80 grams a srpe is given for each ten grams.