Zag-Zaw line of puzzles was first produced in 1909, most incorporate figurals or whimsies, sold in red, orange, or occasionally green boxes with labels on the side or bottom of the box, most without guide pictures. Initially cut non-interlocking but by 1930's became more so. Puzzles have a different cuts so that the same image will come in several versions which means that missing pieces can not be taken from other puzzles with the same image. The puzzle labels are often hand written and come with minor variations in titles and details. Some have a DESIGN category on the label. From my readings this refers to the style of cut, wavy lines, figurals, etc. See also Bob Armstrong's website on old jigsaw puzzles
FOUNTAINS ABBEY, old castle ruins beside river, deer in foreground
about 300 pieces, wooden, figurals, complete with box-one previously missing piece replaced and paper repaired to another, two nibs from the pear figurals have broken off and one has been reglued, and the other has been replaced by filling in on an adjacent piece, push fit style,
