Hi,
I have bought this one on eBay, got it today, I am quite puzzled what to make of it
7.2x7.7x0.25 cm.
The colour is dark, blackish brown. The tsuba feels soft, waxy, yet heavy. The punch marks can be easily felt under the fingertips. Very pleasant to handle and hold.
On the omote the rim stands out a bit more than on the ura. On the ura I see what seems like traces of kuro urushi, not much, but still. The plate tapers gently towards the rim, in which the seam is identifiable. I think that the rim may be of a slightly different material than the plate. It looks like shakudo, while the plate looks like low grade shakudo or katashirome. The kozuka hitsu ana has remainders of kuro urushi inside, but its walls are of reddish brown colour, like that of younger yamagane.
More pics here:
http://gallery.me.com/mariuszk#100704
Any thoughts?