Ravensburger

Otto Robert Maier’s publishing house in Ravensburg; games and jigsaws, with the blue triangle as its mark from the 1970s.

Otto Robert Maier started a publishing house in Ravensburg and published books on architecture and crafts and then board games. Jigsaw puzzles came in the 1960s.

The game Memory of 1959 became a classic, and Ravensburger became one of Europe's largest makers of puzzles and games. The company bought Brio in 2015.

The blue triangle in the corner of the box; catalogue number on the box.

• Toys