Perpetual Calendar
A mechanical perpetual calendar.
Perpetual calendars are designed to account for varying month lengths and leap years.
It's an original from the 1970s or 80s.
The original box is included.
A real eye-catcher.
Hanging loop on the back.
Made of plastic, with a sliding mechanism featuring colored tabs for locking.
Dimensions: 40.0 x 7.7 x 1.1 cm (height x width x depth)
Condition: like new, as it is unused.
The box has some wear and tear on the edges due to age and storage.
Private sale. No returns.
Specifications
ConditionVery goodColorsBlackMaterialPlasticNumber of items1Height40 cmWidth7 cmDepth1 cmSigns of usageWrinkles