Men portrait of a learned

Men portrait of a learned; the portrait is similar to the Scientist Isaac Newton (1642 -1726) framed oil painting; in the upper right corner of the dutsch coat of arms is shown with an arrow; arrows in the coat of arms means :singlessness of purpose; artist unknown; Image dimensions: 34,5cm x 41,5cm; PLEASE be aware that the painting has signs of use for reasons of age; shows color-bursting and damaged