Your Georgia oyster knife was made exactly like it would have been made in the 19th century. This is not an eating utensil, it is a tool.It has been acid etched to inhibit oxidation,and has been coated with a non corrosive paint.It will rust so don't put it in your mouth.The treatment of the tool should last about 3 years,then you can brush it off with a wire brush (that you might clean your grill with)and repaint.