During the course of breeding Shaded Silvers and Chinchillas, what looked to be orange-eyed Shaded Silvers appeared. These were known as Pewters or Pewter Tipped. Some of the earliest Pewters may have been genetically blue (grey) rather than black or may have been light Smokes. Still not common compared to Chinchillas and Shaded Silvers, the modern Pewter has heavier tipping than the Shaded Silver resulting in a darker mantle.
The first Pewters were bred sometime in the 1970s and found in the "Any Other Colour" classes along with other Shaded cats of then unrecognised colours (some of those cats are now recognised as Chocolate Shaded and Lilac Shaded). The Black Pewter gained Championship Status in 1986 in the UK. Still considered by some to be a poor relation of the Shaded Silver, the Pewter remains comparatively rare.
In the late 1890s and early part of the next century, orange eyes were standard for Chinchilla and Shaded Silver cats. Green eyes, now a prominent feature of these cats, were actually considered a fault in those days! Those with a sense of history are pleased to see the ancestral eye-colour being bred again and Blue Pewters have also been recognised.
The term Pewter Tabby has been used historically to describe the Blue Silver Tabby.