I forgot to ask how old it might be, but it doesn't look too old. Its an 5-1/2" floor board with a beautiful golden brown color (I couldn't tell you the type of wood, but maybe some of you can guess from the photo). Its a single piece board with itame-omote cut (I think that's what its called). Came with a paulownia cover and beautiful, but small, old chestnut bowls, with less than a full set of thin glass stones (probably about 5.5 mm thick). Only 160 black and 118 white stones. But I didn't buy it for the stones
The set was $210.
edit: changed itame-ura (lower half of semi-circle on each end) to itame-omote (upper half of semi-circle on each end)