What favor does George ask of Mr. Wilson?

From the text:

"Well, sir, -- what you said was true. I am running a dreadful risk. There isn't, on earth, a living soul to care if I die," he added, drawing his breath hard, and speaking with a great effort, -- "I shall be kicked out and buried like a dog, and nobody'll think of it a day after, -- only my poor wife! Poor soul! she'll mourn and grieve; and if you'd only contrive, Mr. Wilson, to send this little pin to her."