Kreidler Florett?? Monark quelque chose, il me semble... Monark could be possible,seen Danish(Scandinavian)locations PS MCB-Monark scramblers had fitted even F.Morini 50cc./125 Italian engines,that moped but seems Puch or F&S(Fichtel&Sachs)-powered Puch MS 50.
Either a puch MS50V or a puch MV50. The models were identical at the end of the 60's.