Finally found one!!

[Tom King]

I've been looking for this profile and size of coping plane for years.  Tape measure was added to pictures by my request to seller before I hit Buy it Now.  I've bought them before that ended up being the wrong size.  This one is correct for what I need.  It's probably my most expensive molding plane by far, but I couldn't let it go by.

https://www.ebay.com/itm/385393596398

[wtnhighlander]

Nice looking plane, Tom. What is it intended to cut? Window frame parts?

[Tom King]

It's a Coping Plane.  Cuts the copes in sash parts.  I have four reproduction sash to build on my When You Get Around to It list for an 1850 museum house I worked on.   The one we put a Cypress shingle roof on.  The four sash on the back of the house had been replaced with 20th Century cope and stick sash that don't look anything like the originals.

For only four sash, it's not worth spending  2 grand on custom cutters.

I've had all the parts rough milled for five or six years now.  Normally, I use a jewelers saw if I'm making one or two sash.  These four are very large 9-lites.  I didn't want to make that many copes with a jewelers saw.

These coping planes are very rare, and when I've found one before, they were always the wrong profile or size.  I asked that seller to post a picture with a ruler, and as soon as he sent me those I closed the deal.

I reprofiled a molding plane that was close to right a few years ago to run the other molding profile that the cope mates to.  These old sash are mortise and tenoned together with no glue-just pegs.  You can take them apart a couple of hundred years in the future and replace individual parts.  The cope has to be cut on the shoulders of the tenons for all the parts.

The one on the easel is one of the originals that I completely redid for that house.  That shows you how big they are.

The stack in the picture with multiples are some I built to replace missing ones in a 1798 house.  I bought custom cutters for that job of 38 sash, but every one still required a lot of hand work.  Everywhere two parts meet, there is a mortise and tenon joint with no glue.  Those hadn't been pegged yet in that picture.