I have a early side lever (Left Side) 12 back action hammer gun marked W Richards with Birmingham proofs, but am under no illusions of it being the Real McCoy. It has the quality of a JABC. It doesn't have an address per se but each lockplate is marked W Richards & then the top rib is marked W Richards London Laminated Steel. Bore was proofed as a 13 but I am thinking as it was proofed prior to the in between marks it probably started life very close to a 14 with a 12 chamber. It does however also pre-date the chamber mark, so hard to say for sure what it was originally.
