The preaching of Saint John the Baptist Rare three virgins and child golden number

I offer you this graphite drawing. The sheet is 49.7 cm by 37.3 cm. For specialists in old drawings. Exceptional group where we will recognize great classics of the renaissance brilliantly brought together. We will note an old restoration of very good quality towards the knee of saint john the baptist and a small restored hole also towards the elbow, a start of a tear towards the signature (illegible) and a slight stain towards the leaves on the right. The paper is of foreign manufacture, unlaid linen and it would seem that there is a part of watermark on the edge. Despite the lack of laid paper, I will position it at the end of the 18th century because I have already encountered this type of paper.