So again I find myself engrossed in the type information found in Dave Heckel’s guide, and HMike's Blog.
I bought this because real early corrugated planes are not as common place as some others. And as usually dating them can be a bit of a challenge.
The lever cap has the number and the cap, which means it could be a type 1, 2 or 3.
The frog puts it around a type 3, assuming all type 2’s had the horseshoe lateral.
The base also put it at a type 3. The thin casting and squared post seem to correspond to type 3 as well.
The adjuster however puts it at a type 2, with the steel insert.
The iron is also a clear type 2 iron with the oval logo and USA in the center.
So here it is in all its glory.
My guess at this point is I found one of the Sargent enthusiast well sought after 5409, but a least a very early 409c, with Sargent using up some of the parts. Of course there is also the possibility that its a very late 5409, with sargent using some of the new 409C inventory on the plane. Further investigation may be needed.
Here is another which is pretty much identical.
-- There is nothing like the sound of a well tuned hand plane. - http://timetestedtools.wordpress.com (timetestedtools at hotmail dot c0m)