Ta Ting T'ung Pao

Description	Obverse	Reverse	Peculiarity
The Jin dynasty Emperor Shih Tsung (a.d.1161-1189) c.d.1161-1189			d.26mm S1086
			d.25.5mm S1089 Character Yu on the rev. - probably ch.Yu taken from the cyclical year signs Chi Yu of a.d.1189, when coin casted.
			d.25mm Circle on the obv. beetwen Ta and T'ung
			d.39mm Characters on the rev.Shen and Yu New made fantasy coin

Also known coins Ta Ting T'ung Pao, casted in Vietnam in a.d.1369 during Emperor Ying Tsung. But usually Vietnamese coins have little size and are very thin.

Uncleared questions:
1. Are there in literature coins with circle on the obverse as on the third item?
2. I found large fourth item (obverse) only in the book CM - Chinesische Munzen". Combination of characters is uncleared.