Vintage Carborundum Silicon Carbide Sharpening Stone 107 & 109 Indian USA

Vintage Carborundum Silicon Carbide Sharpening Stone 109 Indian Usa

Vintage Knife Carborundum Silicon Carbide Sharpening Stone 108 8 " X 2 " X 1 " (w2)

Vintage Knife Carborundum Silicon Carbide Sharpening Stone 108 8 " X 2 " X 1 " Usa

Vtg Med Carborundum Silicon Carbide Sharpening Stone Box 131 Niagara Ny

Vintage Carborundum Brand No. 108 Silicon Carbide Sharpening Stone 8 X 2 X 1

Vintage Crystolon (silicon Carbide) Pocket Stone By Norton Abrasives (very Old)

Vintage Carborundum (silicon Carbide) Oilstone/honing Stone Hand Made Wood Case

Early Boxed Combination Silicon Carbide Sharpening Stone By Carborundum, One