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<p>[QUOTE=&quot;Conder101, post: 1292619, member: 66&quot;]And the acid eats each metal evenly so the reeds are also retained as the metal is eaten away.&nbsp; So the copper is eaten faster but the reed are retained even down in the bottom of the groove.</p><p><br /></p><p>Remember the reeded edge is formed by being forced against the collar during the strike so if the copper down in the grooves shows the reeds then at one time it had to have been out at the same level as the coppernickel.&nbsp; the only thing that could now have it down at a lower level would be the eating away of the copper by either an acid or a base.[/QUOTE]</p><p><br /></p>

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