The rachet is triangle shaped with bolts front and rear to mount it to the side of the transmission. The apex of the triangle is what I was referring to, not the ratchet teeth even though both are on the bottom. My mid 1929 car has the earlier type with the apex pointing down. This type lowers the lever an inch or so. The pawl is still mounted on the bottom of the lever but not exactly like the later version.
The one in the photo on post #6 is the late type that was used till end of model A production and beyond into the model B era. The green book doesn't always cover earlier versions of parts. If your early side lever breaks then they offered the late type lever as a complete replacement. Even reproduction parts don't always offer parts for all types of assemblies and separate parts.
This link is an example of the early type. It's not a real good photo but that's it.
https://www.ebay.com/itm/13479456620...hoCyNIQAvD_BwE