I Have a few of Ollie Sparks planes and I've decided to let this beauty go.
Designated 10 1/2 because it is half the size of a Norris No 21 upon which it was styled.
This was one of an original batch of just five made two years ago. You can view the model by going to his website.
It's 3 1/2" long with a 7/8" wide blade and has never been used, just admired. The beautiful infill is Honduras Rosewood.