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Everything posted by PietroParis
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I doubt that the seller analyzed the metal composition. Probably they just mean that the tsuba is made of shibuichi, a silver-copper alloy where traditionally the silver is 25%. However, the actual silver content can vary a lot: https://en.wikipedia.org/wiki/Shibuichi
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We've seen plenty of examples from Tatsutoshi and his students Namitoshi and Tatsunao, but this (from Facebook) is the first one I see signed Naminao:
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This appears to be Tatsunao’s most common motif, as you may see by earlier posts in this thread. I had to google what momiji means (something like “red leaves” or more likely just “maple”), I can’t say if this is how the motif is usually called. Finally, I can’t see yahoo! auctions directly either, I use buyee as a proxy site (see this link).
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Thank you Matt, the ass picture is quite revealing: I see some kind of concentric pattern around the pulp cavity that might indeed point to natural rather than heat-induced cracks. OTOH, the intersection angles of the Schreger lines – as well as the look of the cracks, if natural – would suggest mammoth rather than elephant (although I don't know if the Schreger rule still applies this close to the center).
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A few more "baked" pieces (also from Facebook groups, the INS website is down these days). No clue if some of these are mammoth, one could figure that out from a closer look at the Schreger lines.