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post #160 of (permalink) Old 06-21-2019, 07:49 AM Thread Starter
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Join Date: Aug 2009
Location: Cypress, Texas
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Gun Cabinet

Originally Posted by GGaskill View Post
That will bleach out quickly in the San Antonio sun.

That is exactly what happened to this color historically.

This was pulled from a Spanish Ordnance manual by the Curator of the Alamo and sent to me.

"The Spanish painted their ordnance in a blue grey and not as some authors think grey. The pigment was cobalt blue and when exposed to the weather for years it has a tendency to fade to a grey. The cobalt blue was derived from cobalt oxide mined in southern Spain that was sintered with silica (sand) at 1200 C. It was a very stable colour and was popular too in the Spanish Naval Regulations from 1772. The metalwork was painted black. "

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