Picture of fortune-telling jar _ fortune-telling table
Ziyang altar, also known as Xiaoyangtan, is the origin of this name. It is the bottom of some containers made in Yixing in the late Qing Dynasty or the porcelain glaze of purple sand tires, which are specially exported to Japan, Nanyang and other places. But later, whether it was exported or not, "Ziyang altar" became a general term for this kind of jar in the local area. Until the Republic of China, many of these jars were marked with the words Ziyang altar. I don't know if you're hiding anything from this. If so, is it the lid of the cow's nostril? In addition, are the two or four words in the bottom paragraph Arabic numerals or Chinese?
Similar things spread among the people during the Republic of China, and were mostly used as decorations, teapots, medicinal liquor, and even sundries and pickles.
In other words, this thing, as early as the late Qing Dynasty and the early Republic of China, was the upper limit. It is difficult to estimate the specific age because there were many craftsmen doing it during the Republic of China and your pictures were too few.
Collection value, it is hard to say, whether it is valuable or not, what you like is his value.