Roller-Blind Shutter

Roller-blind shutter. Wooden box-shaped object with a large circular opening, a mechanism on one of the long sides and a dial on the other long side. One end has a white disc set into the wood, with manufacture information. The other end has a five-digit number inscribed, possibly a serial number. One of the corners has a mauve-coloured pom pom. One of the wooden sides is removable and held in by two metal prongs.