This Charity's first stamp like label was released in 1902, and they have issued thousands of different fundraising seals. They are attractive, and historic. Interesting "Related Material" abounds, such as tags, proofs, essays, membership certificates and even tin litho donation banks. Illustrated here are what had been 25 cent examples. Cinderella collector and expert, Michael Hide says, "... JNF material has risen sharply over the last 10 years or so. One can still find deals but they are few and far between. Also, many JNF items were actually issued out of their New York office."
Not to be confused with the Jewish seals listed in Mosbaugh's US All Fund Catalog, JNF seals were sold in many countries. After the British abandoned the Post Offices in 1948 they were used in Israel as postage stamps with various hand stamped overprints. The 2009 Catalog of Jewish National Fund, by Ralph Phillips and Izhak Wayman, lists 4200 different thru 2004. Another great JNF catalog is Rochlin's Handbook of the Issues of The Jewish National Fund.
"Since its founding in 1901, JNF has been committed to building for Israel’s future as well as responding in times of crisis and need. A vital part of Zionist history, JNF achieved its goal of purchasing the land that would become the State of Israel, then helped to develop that land into a thriving nation—by planting over 250 million trees, building more than 200 dams and reservoirs, developing more than 250,000 acres of land, and creating over 1,000 parks..."