by Lee S. » Mon Jul 25, 2011 4:58 pm
Hi Nigel,
W.M.WARDEN & CO were telegraph equipment manufacturers in 1860s-70s, the company was located on Regent St. in Westminster.
From this time period I'm guessing the insulator you have is a Varley type. I've never heard of this exact embossing- it would be great to see a picture.
Of interest to Canadian collectors, William Marsden Warden went on to become a partner in Latimer Clark, Muirhead & Co. - this is the company that manufactured the iron poles patented by F.N.Gisborne and used on the prairies.
Lee.