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<p>[QUOTE=&quot;desertgem, post: 2760319, member: 15199&quot;]It is not the oils ( sebaceous secretions) that one worries about in handling coins , it is the sweat ( sudoriferous secretions) that are always being produced , even in very cold temperatures. The dissolved salts ( Na, Cl,K, etc) in sweat , along with a little lactic acid at times can give a pH of approx/ 4.5-7, slightly acidic.</p><p><br /></p><p>The oil from the sebaceous glands are usually longer string organic molecules that have to be broken down by microorganisms on our skin to more active acids. If your skin smells or tastes &quot;gamey&quot; , maybe one shouldn&#039;t handle coins.&nbsp; The oils from handling do not produce fingerprint images on coins, the images follow the patterns of the sweat glands.[/QUOTE]</p><p><br /></p>

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