This is a nifty little portable or hand held stapler by the manufacturers of Swingline Staplers before it became Swingline. The company was started in 1925 in New York as the Parrot Speed Fastener Company.
In 1939 they created the first top opening stapler that made it easy for anyone to drop in a row of staples. It made using staples practical and was a boon to business offices everywhere. (Before staplers and staples folks used paper fasteners just like the ones I am selling in another listing in my shop (Brass Paper Fasteners by Diamond))
1956 saw the company change its name to Swingline.
They did not however place the name of the company on this stapler, as was the case with many of the staplers manufactured by the Parrot Speed Fastener Company. This style of stapler has been seen marked Swingline, however the one I am offering you is only traceable to the Swingline family by the staples we are admonished to use on the inside of the mechanism. The company kept the same styles of staplers and staples to be used and the same stock numbers from before the name change, during the name change, and beyond. This is why I say, from what I have looked into about the company that it is Pre Swingline, and more than likely dates between 1945 and 1955.
There is an "S" lightly carved in the one side of it, but this was to denote the owners name, Siemers. (In years past when one worked in an office, one supplied many of the items one would use working there.)
This stapler fits in the palm of your hand and is surprisingly simple to use and does not require much hand pressure to staple several pages together. Measuring 4 1/4" long, 2 1/4" high and just 3/8" wide.
It is in working condition, and in fact uses the TOT S. F. staples that are still being manufactured today. You can see by the photographs above that it wants you to "USE TOT S. F. STAPLES ONLY".
Condition is excellent for it being a hard working, all metal, office tool that was shoved in countless drawers, dropped, slid, hammered (ever know a woman not to hammer something with a stapler?) and yes, even used as a bottle opener on occasion. It has a few spots where the plating has come off or worn smooth. It needs cleaning also, I only lightly dust things I am selling, as I understand collectors want "Eternity's Leavings" still on the items they buy.
There are two leavers that; open it to load, and change the configuration of it into a tacking stapler. Both of these work perfectly.