It's supposed to be this variant, a 10 cash Dazhong Tongbao. The Dazhong coinage was minted by Zhu Yuanzhang when he was King of Wu (later became the Hongwu Emperor of Ming). Would be interesting to see whether yours is genuine or not since they are not particularly common.
For me not genuine
The characters do not have the fineness of this coinage and it seems that there is only an accent on the tong (right character)
Wait for other comment...