Most likely an older ( 80 years? ) tokoname pot judging from the brownish clay which has developed a patina throughout. The sharp lines make it ideal for a powerful looking chuhin sized conifer.
I have a chuhin pine that this is ideal for, the problem is that it is still about 8 or 9 years from needing the pot. So this is available for a while .
31 x 19 x 9.5 cm / 12.2 x 7.5 x 3.8 in