Circular Jig Saw Puzzles

The scope and variety of this range of cardboard puzzles is almost unparalleled in its extent. They proved very popular and remained in production for a lengthy time period.
Subjects included famous buildings, battles, transport, inventions etc. etc. etc.
Hopefully, with enough followers of this impressive range, we will be able to build an accurate record of the puzzles it contained, along with as much information as possible on dates etc.
There are also several sub-series, such as those for the RSPB, and the Junior circulars
Special thanks to Alan Sudbury for regularly supplying wonderful images of puzzles for this album, also to Barbara Middlestorb and Cecilie Kay for their collective wealth of knowledge on this manufacturer and range.