Unmarked Stanley Plane ID

[Michael Cuthriell]

I have a Stanley plane I can't identify. It is similar in dimensions to a 5-1/4. The only marking is "Stanley: across the toe. There are no casting marks. The frog is adjuatable fore and aft, but has no adjustment screw. The mating surfaces between the frog and bed were not machined and retain their b;ack. coating. The 1-3/4" blade is marked "SW". I don't know if it is the original/ The lever cap is similar to that on a No 23 plane I have, but not interchangeable. Any ideas what this is?image1(2).jpg

[Rick Whitehead]

Looks like the Stanley "Foursquare" jack plane.
The "Foursquare" line of tools were made by Stanley as homeowner-quality tools. I think they made a "Foursquare" smooth plane and a block plane as well.
Rick

[steven c newman]

Stanley offered a line for homeowners called Four Square, and this is one of their jack planes.

Later versions had a logo of four red squares on the lever cap.

[don wilwol]

Definitely a 4 square. Its similar in size to a 5 1/4 but it's the only bench plane Stanley didn't give a number to. They just sole it as a Junior Jack.