The Black Diamond with the Pyro-Oxidized black finish was introduced circa 1907 in Norwich and continued to be offered after the move to Woodstock, Ontario, Canada. In addition to the Black Diamond grade, Tobin offered that finish on any of their higher grades for a bit extra. Tobin was asking $20 to $25 extra for ejectors when Remington Arms Co. were giving them for $5. I guess that is the reason don't see many Tobin ejector guns. Even Frank's personal gun while the top grade, with a single trigger and the pyro-oxidized finish was an extractor gun.
Is that pyro-oxidized finish similar to the finish seen on this Darlow Norwich? What, if any, is the connection between Tobin and Norwich and Darlow? Also, just as an aside I have seen this gun in person and it looks better than it shows in these pictures.
