I bought the part of the image below as 1 Mun of 1757 KM # 29 (see label). It happens that I do not believe it is a KM # 29 piece. But, there is no piece registered in Numista where all the characters are similar.
Someone can help me sort it accurately so I can register it in Numista properly?
Thanks in advance for the help made available.




Diameter: 24 mm; Thickness: 1.2 mm; Weight: 4.2 g.