Spalding began offering their “Simplex” Golf Ball Marker no later than 1911. The catalog for that year advertises the Simplex ball marker as follows: "Impresses initials, but does not injure the ball. Marking being below surface it will not wear off, and will retain pencil, ink or other coloring." Price was $2.00
The Spalding Simplex ball marker offered here comes in its original box.