I'm new to hand planes. Found this Stanley Bailey no 4 at a garage/estate sale last week for $2. According to this site it appears to be a type 11 made between 1910-1918, and in good shape as far as I can tell. Got it cleaned up, stripped the obnoxious red paint and refinished the knob and tote, and removed the rust with Evaporust. Decided to leave the japanning as-is, and gave it a light coat of wax. A fun project. Still working on a sharpening system so I haven't honed the iron yet to see how she works. A question -- what are the 2 screws for on the body... attachments?