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<p>[QUOTE=&quot;Ken Dorney, post: 3206766, member: 76086&quot;]The Da Guan TB looks fine superficially.&nbsp; The green patina in spots look abraded or cleaned <i>under</i> the soil, so that would be hard to explain.&nbsp; I would use a toothpick and scrape a bit at the green and see how hard it is.&nbsp; If its soft its not old patina.&nbsp; I also wonder what the various blobs are that can be seen on the obverse.&nbsp; Is it corrosion or leftover casting metal?&nbsp; These were produced at the height of quality control and I have never seen any with bad castings.</p><p><br /></p><p>The iron example also looks fine style wise.&nbsp; However the soil seems to be applied.&nbsp; Look at the Guan character at the lower right and it looks like the soil appears to be turning upwards and flaking away.&nbsp; Soil should never do that but it will if it was applied recently and when wet.&nbsp; </p><p><br /></p><p>Then again, there are a number of iron examples on the market this year, but I have only see them in the single denomination, not in the 3 or 5.[/QUOTE]</p><p><br /></p>

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