it is Japanese coins they are kanei tsuho ... you can find some over here http://www.japanesecashcoins.blogspot.com/
Kanei coins I am not just trying to boost my sales! When I started "Early Japanese Coins" I was bewildered by the Kanei varieties. So I wrote the guide to these as much for my benefit as potential customers. If you get the book, and it is very good value for money, do let me know how you get on. Best David
I have purchased it and am awaiting some spare time to dive into it. I feel most honoured to have been introduced to this book by it's author. Thank you, Joe