This chamfer vs. imprint summary is built mainly from information and photos in the Nicholson-Chelor collection at Colonial Williamsburg. Additional examples are from planes in private collections. Imprints are covered in relative date order starting with GAWP5 imprint designations. As applicable, specific information on construction details is provided, towards the goal of tracking construction details over time. Imprint order and relative working dates for each imprint are based on research by the editor and Mike Humphrey. 

​

• Wedge finials defined by shape and size. The small round finials are found on the earliest planes made by John.

• Ogee and cove references relate to shoulder finishing details in John's late planes.

• Earliest W references the 1st state wear on the 2nd Wrentham stamp. I.E. the first planes made by John.

• The first 5 plane photos for imprint B are examples of John's late planes having flat back wedges. Note the comparatively short chamfer stop elements of these 5 late planes.

• While not an "absolute", the chamfer stops on John's earliest planes have a step followed by a long taper. Plane 466 has a slightly larger finial and the beginnings of a lamb's tongue chamfer stop, each reflecting a slightly later manufacture date.

• A series of articles on the Nicholson's and Chelor are slated for publication in The Chronicle starting in 2025.

​