Verry nice violin bow C. G. Gotz Jr 4/4. Weight 52g,see on photo, Lenght 74.2 cm, round baquete. I don't know what wood is... If original or not... I dont know if silver or not... Condition is excellent, not have cracks, need more hair. Frog is ebony wood probably. The perfect tightening nail has no oscillations. I don't know more info. Will send in a strong pakege. Violins and bows described as 'certified' or 'attributed' include images of their certificates and are therefore considered to have a higher degree of documented certainty regarding maker, origin, and age than instruments described only as 'labelled' (violins) or 'stamped' (bows), for which we provide no guarantee of any kind