Jewish National Fund Pocket Donation Box – "Fill the Brick!" – England

"Fill the Brick", a Jewish National Fund pocket donation box. England, [ca. second quarter of the 20th century].
A collapsable pocket donation box made of cloth, designed as a brick, for collecting donations for buying land and building houses in Palestine. On the front of the box is a leaf depicting a map of Palestine with the inscription "Buy Land for Houses. Fill the brick and buy land for its foundation" beside it.
On the back of the box is a leaf with dotted lines for adding the name and address of the owner, a call to donate for the building of houses "to house the people who fled from exile", a slogan that explains that "Your 10/6 will buy 50 sq. Yds. of land" and the address of the offices of the Jewish National Fund in London.
6x10.5cm. Good condition. Small tears. Minor stains. Slight unravelling in the corners of the box.
Not listed in "The Blue Box" catalog by Shaul Ladani and Dotah Shulman.