The originally Cornish company, operated in South Wales from c.1780 through to 1797.
There is one of these coins in Swansea Museum
In 1792 a company was formed by Birmingham businessmen, the Rose Copper Company.
Initially it obtained its copper from the Mines Royal Company, subsequently shifting to Fenton & Company, whose smelting works, next to those of the Birmingham Mining and Copper Company, were bought by the Rose company in 1797.
Like earlier companies it probably also manufactured brass, and possibly spelter.
Matthew Boulton was a prominent shareholder and instrumental in arranging the merger with Fenton.
It was through the Rose company that he obtained much of his supply of copper for his coinage contracts.
The Rose Copper Company took over a smelter adjacent to Lockwood's Landore (Llangyfelach)works in1797.
This site was originally erected by a Leeds based firm, Fenton & Chacewater Company in 1780.
The Rose Copper Company continued to occupy the works up to 1822.