I have an old hand painted track frame from around the 50’s, & was wanting to know if it was either made by bosari cycles or if “Bosari” was a manufacturer back in the day.
cheers 
its a shop in carlton.
take it there and ask them.
although it may have been painted with the “bosari” name on it.
Bosari or Borsari?
If it is the later they did build frames in the early years.