Ontario Antique Tools » The Tool Shoppe » Saws » Disston #4 Backsaw Disston #4 Backsaw SOLD Appears to be New Old Stock. Henry Disston & Sons #4 Cast Steel backsaw mfg'd in Toronto. Original tooth grind and set. Handle shows minimal loss of finnish. Sharpened crosscut 14 ppi. 12"x4" blade and 16" overall. Updating...