|Title:||Cast Caveman Figure|
|Description:||2 3/4 " cast figure of caveman with club. Seems to me to be cast in lead with bronze over (or copper/brass) has turned green around edges. Has, considering where it was found, quite detailed hands, feet and facial features. On basethere are markings on back. First letters worn but it appears a "A7" or "47" at end. Can see faint file marks on bottom of base. Is free standing.|
|Condition:||The surface seems to be in fairly good conditions with only a few slightly worn spots where other material is showing through. The bottom of base was not bronzed or what ever it is. He is "green around the edges". I do not think he was polished with anything when he was "dug up"!|
|Origin:||The item was dug out of a slate mine outside Wallace Nova Scotia, Canada which is on the Sunrise trail-Northumberland strait. In it's day, it was a very, very active mine.|
|Provenance:||Just dug up and on a window sill.|
|Appraised By:||Leslie Russell|
Your caveman is made of cast bronze. Without a makers mark we cannot attribute the piece to any one sculptor or manufacturer. The number/letter is the makers catalog/model number.
Changes to the surface of a bronze depend on the local environment—temperature and humidity fluctuations. Main corrosion products which form after prolonged outdoor exposure are copper compounds because bronze contains mostly copper with small amounts of tin, zinc, and lead. When copper first corrodes it becomes covered with a layer of copper compounds (cuprite), a common copper compound. After a while, this layer becomes covered with another layer containing copper compounds. A bronze can be covered with many copper compounds, but mainly it will be green copper sulphate hydroxides (brochantite and antlerite) and green copper chloride hydroxides (atacamite and paratacamite). These are the compounds that give weathered bronzes their green appearance.
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