Rare O. LONGVAL Patent Oilers for Bench Planes Front & Rear – EXCELSIOR 102392 – AS OF MAR 15

The only pair we have ever seen. The front knob is marked PAT APLd FOR O. LONGVAL. The knob simply replaces the existing knob on any Stanley bench plane no. 4 through 608. The rear oiler can be mounted behind the frog or behind the tote on planes 6-608.