Reply To: What is this plane please??

I based my original assessment on the apparent size of the thumbscrew. The plane can be used to cut housings, albeit for very thick boards. I estimate the blade is about an inch wide since the thumbscrew would fit a thumb, the quick way to estimate an inch from tip to first knuckle. Using the tool as a rebate plane is also possible with a guide in any case. It just seems a very practical use keeping in scale with making furniture.