Coalbrookdale (click on photographs to bring up bigger/better versions).

At the Museum of Iron.

coalbrookdale In a display dedicated to the Great Exhibition of 1851. Photo supplied by Paul Snelling - thanks, Paul.

Markings: Lion.

Manufacturer: Joseph Evans.

coalbrookdale In the same display, this small pump has a Registered Number only otherwise seen on a pump in the author's possession.

Markings: Lion, "RD NO. 46465" on the spout and a "2" on the base flange.

Manufacturer: It's a Joseph Evans Colonial pump, Size 2 [= a 2½" barrel].