12 Inch Plow Share for John Deere Moldboard Plows with Syracuse Series 1442 Plow Bottoms.
Also referred to as "stony" style plow shares.
The ear is chipped shown in picture number 4.
Commonly used on John Deere Number 52 trailer type and similar moldboard plows.
John Deere and aftermarket part numbers: 1442 RDDS, 1442RDDS, SHCX1442RSTN, X1442RDDS.