Art deco perpetual calendar

Art deco perpetual calendar from the mistral brand: marble and metal the day of the week is adjusted using a wheel on the back, the numbers are turned by turning these small round buttons to the right and left respectively and the months appear on 6 small laminated cardboard boxes slipped into the lower window (printed on both sides). - complete and functional - good condition, wear/scratches from use of the metal, marble in good condition (no chips) - dimensions: l14.5 X d6.5 X h11.5cm.