This is a wooden assembly kit, a hand-crank perpetual calendar that covers the years 2017-2044... or something like that. It has a beautiful design, with numerous overlapping gears moving when you adjust the year and month. Approximately 10cm in diameter. It is already assembled. There is one small part that is chipped (see image 5), please understand. I will send the chipped piece as well, so please try to repair it with wood glue or similar. It will be sent via Nekopos (a Japanese delivery service).