Great find! It's a Craftsman 18" power reel mower, model #535 81980 :tongue:
Sorry I don't know the year but it was made by Murray for Sears. Believe it or not you can still get most parts for that Tecumseh engine from the Sears parts site. But I had a real hard time identifying the actual Tecumseh engine model. The Sears model number from the shroud appears to be 143-581052, but that does not cross-check to any Tecumseh model number. Here is a link to the Tecumseh 4-cycle technician handbook - see for yourself (the chart is at the end of the PDF). The Tecumseh model number may be on or near the flywheel?
http://www.smallenginesurplus.com/service-information/Tecumseh/tecumseh-L-head-w-sears-cross-reference.pdf
How does it cut? I had a
very old manual reel mower that cut the grass like a dream as long as it wasn't too long.