Stanley Bench Plane Type Study Breakdown - Types 9, 9A, & 10 - planes with 2 patent dates in the bed 

This is the next video in the series about the Stanley metallic bench plane type study. This is the short version, intended primarily to help you determine the type of your bench plane with two patent dates in the bed behind the frog.
Introducing “Type 9A” into the Stanley Type Study lexicon. The Type 9A bridged the gap between the Type 9 and the Type 10, especially for the plane sizes larger than the No4.
Questions/comments always welcome, whether here or on the Just Plane Fun Facebook page. Thanks for watching!