This is a very rare 1800s solid brass perpetual calendar that would have hung on a necklace like pendant. This most likely was a traveling calendar to keep track of the different days of the year.All the text is in German and it reads Globus Kalender. It has 3 adjustments to adjust the date, the day of the week, and the month. I believe it also keeps track of day and night. There is a center brass spine that goes around the sphere and on each side you can turn the half of the sphere to set it to the correct day and month. It looks like at one time it was completely gold-plated. There looks to be only a little bit of gold plating left. If I had to guess, I'd say this is from around the 1860s. I have searched many hours trying to find another one of this online and cannot find any. It is in excellent, working condition and measures 15/16 in diameter.
Truly a rare traveling perpetual calendar. Please ask if you have any questions. Collectibles memorabilia antique retro vintage history historical jewelry science scientific planets astronomy charm neck fashion costume adjustable calendar stationery 19th century german germany globe circle round earth spherical astrology astrological stars moons. This item is in the category "Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Other Antique Science Equip".The seller is "thechocoberry" and is located in this country: US. This item can be shipped worldwide.