Has a pic of a man in a circle which says knickerbocker silver co. around the outside of the circle it says "manufactured and guaranteed by" under that it has the number 406 and under that it has a pic of an arm and says highgrade metal.
good morning- a friend of mine has got a violin dated 1735 it could be made from j.g. Hellmer- if you give me your e.mail I send you the photos. i'm living in Belgium Antwerp- you could indicate me somebody wich I can show.thank you very much-