These juicers are the best because they *catch* the seeds! No more fishing the seeds out of the juice!  I discovered these nifty tools because a 90-yr old at a yard sale said they were her favorites, and I've been picking them up every chance I get, which isn't that often lately.

As with all vintage aluminum: hand wash. 

8" long x 4" wide

Marked as "Foley." Some expected vintage wear on the handle but overall it is nice, bright aluminum.

A perfect design. Sits easily on top of a glass cup, ramekin or measuring cup.  Has a deep enough reamer for even small citrus.  It's just a thing of functional beauty.  

ABOUT THE PATENT
The patent is marked on the handle, "Pat. 161609". Approved in 1951, the patent document begins:: "Be it known that I, Lucille M. Barbery, a citizen of the United States, residing at Minneapolis, county of Hennepin, State of Minnesota, have invented a new, original, and ornamental Design for a Juicer, of which the following is a specification, reference being had to the accompanying drawing, forming part thereof."

ABOUT FOLEY 
Foley Manufacturing made much-loved kitchen tools. For more info, see mexkitchen.blogspot.com/2011/05/oldest-operating-kitchen-tool:

"..Foley Facts ....
News-Antique.com - Apr 30,2007 - One of the great Houseware Manufacturing Companies was in Minneapolis, Minnesota. If you ask most people about the Foley Manufacturing Company, they will either look very perplexed or say, “ that’s the food mill company, isn’t it?” Most people don’t realize they grew up using a variety of Foley products.
Foley Manufacturing was founded in 1926 by Walter Ringer, Sr. and yes, their first product was a food mill acquired and licensed from a foreign patent in 1933. This product grew in popularity during the Depression years with a reputation for thrifty food preparation and a timesaver in the canning process. This food mill is still in production today. Two other early products that were very succesful was the tri-blade Foley chopper and the Foley blender. Although most of us today refer to the blender as the Foley Gravy Fork. Both of these are very sought after by collectors but more so by people who want to use them on a daily basis.
During the war years the factory concentrated on producing mess kits and other neccessities for the war effort. When postwar production resumed, Foley expanded by acquiring the Meets-A-Need Co. and their Sift-Chine flour sifter and started making sifters under the Foley name.
During the 50s and 60s Foley continued to introduce new products such as handheld juicers, shredders & measuring tools that expanded their kitchenware line. In the 1960s, many of their items were made for them in Japan. In 1984 the Foley Company became part of the Newell Companies and production continued as the Foley-Martens Co. Products are currently manufactured at a plant in Kingsford, Michigan. Because theirproducts were such useful kitchen tools, finding them in mint condition with labeling intact is very difficult."