Shun-I and III sonosheets - these are quite rare
https://page.auctions.yahoo.co.jp/jp/auction/u371563854
https://page.auctions.yahoo.co.jp/jp/auction/x716709284
https://page.auctions.yahoo.co.jp/jp/auction/u371563854
https://page.auctions.yahoo.co.jp/jp/auction/x716709284