dave5225, you have very interesting blade! Congrats!
First, in 1892 the owner of this stamp was
Francis Arnold Colley from Ranmoor near Sheffield. Probably, he was connected with
Thomas Colley, who was listed in 1774 as a table knife manufacturer in Campo Lane. But it's only my sumption.
And the second. Your blade has the same symbols as Joseph Rodgers razors. It's very interesting fact.