long chinese dadao execution ''sword'' ?

[Ren Ren]

Originally Posted by Kubur

Yes

The Eight Precious Things often occur as decorative motives and sometimes individually as Chinese porcelain base marks. They are from top left; the Jewel or "pearl", the Cash coin, the Open Lozenge, the Pair of Books, the Solid Lozenge, the Musical Stone, the Pair of Horns and the Artemisia Leaf.
pair of books

This is a very interesting and rare version of the "Eight treasures" ornament (in Chinese 八寶 Ba bao). I think it was popular in the Ming era.
In part, it coincides with the Buddhist ornament "Eight treasures of the perfect king Chakravartin".