Rechenpfennig with Wheel

rechenpfennig fortuna variabilis 

Woman with scales and cornucopia / man with ribbon sitting on wheel
1758-1777 - Clausthal, Germany -
Johann Wilhelm Schlemm

OMNIA CUM PONDERE NUMERO & MENSURA (Everything has weight, number and measure) / I.VV.S. (Iohann Wilhelm Schlemm)
Fortuna stands in a toga and helmet, holding scales and a cornucopia from which coins are pouring out

FORTUNA VARIABILIS (Luck is fickle)
Fortune sits at the helm, holds the sail