rare Pike India oil sharpening stone in cast iron case

Rare antique sharpening stone in original embossed painted cast iron case. Embossing reads "India oil stone manufactured by Norton Company sole agents Pike Manufacturing Co Pike NH U.S.A." This is a natural stone and the "manufacturing" is just in the cutting. Stone is a light brown color and marked on end "medium India" Stone measures 6" x 1 11/16" x 3/4". a few small edge chips. Seems a cast iron case would yield more chips than a wood case. It is a very well made and expensive case that once had 4 round cork wafers at each corner. Original black paint has rusted through on top. . Buyer pays $12.00 mail.