EARLY STANLEY FROG NO 4 TYPE 9 (PAT 7-24-1888) for 2" WIDE PLANE GOOD COND
EARLY PLANE FROG ( left hand thread with 1" brass adjusting screw) FROM MY COLLECTION OF SPARE PARTS THAT I HAVE ACCUMULATED OVER 50 YEARS. IN EXCELLENT CONDITION AND READY TO REPLACE A BROKEN FROG YOU MAY HAVE ON A FAVORITE PLANE.