Just spilt milk that I was able to get up. Their name was in a couple of the tube steel threads. Baldwin Brothers & Company in 1876 were at 72 Broadway, NY and oddly enough a listing 3 years earlier has an Austin Baldwin & Company at the same address and it is an agent for a boat ride across the pond. At the time there were Clyde Steamers that went from NY to Glasgow, Liverpool, Belfast & Londonderry. They were aptly named:
Alabama
Georgia
Virginia
Pennsylvania
I wonder just how may tubes rode across on the Alabama? Also I'm curious if the Whitworth certificates were kept at Baldwin Bros. & Company, 72 Broadway?
Kind Regards,
Raimey
rse