Marking device for golf balls

A marking device for golf balls, which comprises a seat, an arch-shaped retainer, and a bottom plate;

• wherein the seat defines a central recess extending downwardly from a top surface thereof and defines a bottom opening, at a recessed bottom surface thereof, which communicates with the central recess, the seat is provided with an anti-slip pad within the central recess, the seat is provided with upper positioning means at the top surface across the central recess and provided with lower positioning means at the recessed bottom surface across the bottom opening, the arch-shaped retainer is provided with retainer positioning means corresponding to the upper positioning means of the seat, and the bottom plate is provided with plate positioning means corresponding to the lower positioning means of the seat so that the arch-shaped retainer can be properly positioned on the top surface of the seat and the bottom plate can be properly positioned on the recessed bottom surface of the seat, the arch-shaped retainer defines a central slit, and the bottom plate defines a plurality of hollowed-out symbols;
• whereby the golf ball can be placed in the central recess on top of the anti-slip pad and under the arch-shaped retainer to be marked by a pen inserting through the central slit of the arch-shaped retainer or the hollowed-out symbols of the bottom plate.