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PVC Damage 5 4.3 6
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 PVC Damage

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richardthebrave



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PostSubject: Re: PVC Damage   Sun May 01, 2011 3:25 am

25Cents wrote:
ericgo wrote:
i've encountered quite a bit of those kinds of coins locally especially with the old 1 peso coins.

most of the coins that have toned and have the lustre (cartwheel effect) missing are previously cleaned coins.

i've read that there are coins that have been dipped but still retain the original lustre though


what's a cart wheel effect?


kapag itinapat mo ang coin to any light source and try moving the coin, the light reflected on the coin emulates a rolling wheel.

the way to move that coin is similar to dropping it on the ground where the coin circles on its back until it stops flat. Very Happy
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25Cents



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PostSubject: Re: PVC Damage   Sun May 01, 2011 1:11 pm

Wuu... Uu nga nu! May tawag pala dun.. Thanks for the info! Very Happy
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richardthebrave



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PostSubject: Re: PVC Damage   Tue May 03, 2011 2:56 am

25Cents wrote:
Wuu... Uu nga nu! May tawag pala dun.. Thanks for the info! Very Happy


hehe apir! Very Happy
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ericgo



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PostSubject: Re: PVC Damage   Tue Jun 28, 2011 9:15 pm

there is the opinion of many collectors and numismatists that it is better to clean a coin with pvc contamination than to leave that coin uncleaned. They said the main reason is that the pvc will eat into the coin over time and the fact that a coin has pvc contamination disqualifies it for grading with ngc or pcgs. what do you think about this?
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