I love a perpetual calendar, and especially one like this with wound scrolls of paper inside; rotating the wooden knobs turns time forward or back, and is quite a satisfying and pleasureful action! I believe this one dates to the early-ish 20th century, with rose colored board panel between the glass front and the paper scrolls and feels as if it should live in an old school library or office filled with leather club chairs and matte green arts and crafts pottery!
7” t x 5 1/4” w x 2 7/8” d and works perfectly. There is a water stain to the inside panel at upper left corner and a couple of losses to the wood on the backside top corners only, as documented. Some glare in photos.