I don't think they all were made there as early on they sourced the British trade and later the Belgians. For a time, up to say the 1890s, Alfred Tonks was head over the repair dept after his business failed. Not sure about Alfred, but brother Joseph was crossing the pond from time to time.
Was that D. Leonard & Sons?:
http://www.doublegunshop.com/ryder1.htm"The firm of W.J. Jeffery, so famous for its association with far-flung colonial fields, ordered most of its later guns and rifles from smaller makers in Birmingham, John Saunders, sadly an almost unknown craftsman, built quite a few shotguns for Jeffery. Jeffery's famous double rifles were often turned out by the family-operated firm of D. Leonard and Sons. "
1878 Advert
1879 Advert
Kind Regards,
Raimey
rse
