I only give my own views on the first Shou Ziwen Altar. Judging from the shape and decoration of the jar, it looks like something from Makou kiln in Qing Dynasty, which is similar to what you said about 4-500 years. The product of Makou Kiln is Hubei folk pottery, which has a history of 1000 years. The ancient site is located in Makou Town, Hanchuan City, Xiaogan City, Hubei Province. Makou Kiln is famous for producing all kinds of jars, so it is also called "jar kiln". In Hubei, it is commonly known as "daughter" as "jar". Before the daughter got married, the man gave a jar of wine, and the food that the woman accompanied was often packed in various jars. "jar" So it became synonymous with her daughter. "Clean altar" is a necessary instrument for local weddings. Its shape is short and round, the whole body is engraved with the word longevity, decorated with palindromes and lotus patterns, which is beautiful and unique. There are similar jars for sale on the Internet, all from the Qing Dynasty, and the quotations are generally around 900 yuan. Otherwise, those who quote millions are purely random and have no reference value. Therefore, this altar still has certain collection value and appreciation space, and it is recommended to collect it well. The following picture shows the same type of Shou Ziwen altar.
In addition, the second four-series vat has the characteristics of imitating European tanks, which is very common in the modeling of ancient Roman tanks. The pattern is a bit like pomegranate pattern, and it doesn't completely belong to the traditional pattern in China. On the other hand, it seems to be gilded all over, so it should be modeled after European water tanks as a whole. As for the age, it is impossible to give an accurate conclusion. From the picture, it is probably from the Qing Dynasty to the Republic of China. The above is for reference only.