Casa Robino

This ‘forgotten’ number-notation was developed in the late 13th century by Cistercian monks in what is now the border region between France and Belgium (particularly Aulne-sur-Sambre in the diocese of Liège and Vaucelles in the diocese of Cambrai). It was used by the Cistercians – admittedly by only a few but nevertheless all over Europe – for at least two centuries thereafter, as an alternative to the well-known Roman numerals and the less-well-known, ‘new’ Hindu-Arabic numerals