NOTE: Sid Lethbridge - The Two Camels Etching (Mordock) presents a pair of camels with palms trees framing the scene.
For the purposes of my research the firm that did this etching has been designated as U2 i.e. Unknown 2. They were very prolific and there are about 27 etchings that can be assigned to them.
Ref. Etched Pattern Glass, Acid Etched Goblets and Tableware of the 1880s, p 136