The spade shaped buckle comes in a variety of sizes. This one is 2.4 cm long and intended as a thin belt buckle or purse closure. They are sold as a set of 5. Measurements: Spade L = 2.4 cm, W = 2.2 cm, Strap size = 1 cm
This buckle is based on an example from an archeological site and can be seen on page 239 of the book by V. V. Sedov. "Eastern Slavs in the VI-XIII centuries." https://www.archaeolog.ru/ru/el-bib/el-cat/el-series/arch-sssr/archaeologyussr_02
