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<p>[QUOTE=&quot;Tamaracian, post: 8267284, member: 23122&quot;]Aside from the aforementioned methods, another way that the surface can be altered is by &quot;thumbing&quot; (with or without the use of a foreign substance; e.g. nose oil) wherein the thumb is moved in a back-and-forth or circular pattern while applying some pressure.&nbsp; Performing &quot;thumbing&quot; will tend to smooth out the surfaces by some slight movement of surface metal due to friction and shearing pressure, and if oils naturally present on the human hand (or added as from the nose or forehead) are present, these oils (or putty) will fill in minor scratches and also tend to make the overall surface more uniform.&nbsp; If the coin originally had some mint luster then performing the &quot;thumbing&quot; will tend to alter the metal flow lines and reduce--or if overly done--eliminate the luster and leave an overall satiny finish.[/QUOTE]</p><p><br /></p>

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