Great Grimsby Coal Salt & Tanning Co. Ltd. (Cosalt); heavy brass ashtray.

Is this indeed a heavy brass ashtray (648g) for use on a trawler? Please let us know if you have seen one before.

The name Cosalt was a portmanteau of the company’s original title The Great Grimsby Coal, Salt and Tanning Company. Formed in 1873 as a co-operative of fishing vessel owners, it was a communal best-value support services company involved in servicing and supplying a variety of products and services for fleets, fishing, and other vessels, providing:

Salt – to preserve the food and fish caught Tanning – to waterproof sails and rope Coal – to fire the vessels and galleys Clothing [Reference: Wikipedia]