Norwegian

Hi! Last week MY grandfather gave me a Singer 29-4 that HIS grandfather used to sew on! + (a lot of old hand tools) I've spent the last days cleaning and fixing up the old (from 1896!) machine again.. The spring (part nr 8619?) on the thread tensioner on top of the machine broke into small pieces.. Does anyone know where I might find parts for such an old machine? It might of course be possible to find another spring that might fit, but original parts are more fun.. Thankful for any help! Rik