See page 26 of O.P. Bennett's 1924 book titled The Collie. Dr. O.P. Bennett was the President of The Collie Club of America.
On page30, is the description of his prize winnings and plated collar with 21 plates engraved with the names of the dog shows which he was BOB. Also, of his eventual sale, retirement, and death . Old Cockie was a very dark sable with white collie dog.