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<p>[QUOTE=&quot;cladking, post: 8392054, member: 68&quot;]Wear is an accumulation of small collisions and abrasions.&nbsp; Just bouncing around in a pocket might not get much wear if most of the collisions are with the fibers of the pockets.&nbsp; It needs to bounce against metal car keys and other coins.&nbsp; It&#039;s also a function of things like how active the pocket wearer is and even how he walks.&nbsp; A gliding stride won&#039;t cause things to jingle much but using a pogo stick will.&nbsp; </p><p><br /></p><p>One of the reasons that old silver coins wore so well and quickly was that the coins had real purchasing power so most workmen carried them and most workmen had highly physical jobs.&nbsp; Ten men used to spend the day digging a ditch and wearing down lots of coins.&nbsp; Now a machine does all the work and eleven men watch and a twelfth operates it.&nbsp; Coins don&#039;t wear much any longer but they get scratched up and lost.&nbsp; </p><p><br /></p><p>I&#039;d try carrying my car keys and a few half dollars in the same pocket.&nbsp; </p><p><br /></p><p>I once had&nbsp; a very physically demanding job.&nbsp; I could start the day with a few coins from mint sets and by the end of the day they&#039;d all be AU.&nbsp; If I didn&#039;t spend them first within a week or two they&#039;d be XF.&nbsp; It was always nice even wear.&nbsp; </p><p><br /></p><p>Keep in mind as well that depending&nbsp; on the type of cleaning you&#039;re wearing away that it might require as much as a two grade loss to eradicate it.&nbsp; A polished XF might need to be worn down to low end Fine before the polishing next to all the devices has been worn away.[/QUOTE]</p><p><br /></p>

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