Unusal 20c peice

Coins from Vending · August 14, 2013, 06:29:23 PM

This 20c coin stuck out like the proverbial today when I emptied a vending machine.

The coin is ultra clean, the lettering is tack sharp, yet the coin appears as though it has scratches across both sides but if they were scratches it would've effected the lettering??

The coin looks like it may have been "cleaned" using maybe a high speed polisher like those desk mounted grinding stones??

Mister T · August 14, 2013, 07:29:10 PM

There's been a few coins that look like this posted before and I think the consensus was an acid bath.

Fulvio · August 14, 2013, 08:45:17 PM

Quote from: 'Mister T' pid='24922' dateline='1376474350'the consensus was an acid bath.

I'm starting to doubt that story. I've been keeping the $2 examples I've come across, and the stack is large enough to suggest something else is going on. No idea what, and it may or may not be PMD, but I'd like to find an answer.

Nevol · August 15, 2013, 07:55:03 AM

Quote from: 'Mister T' pid='24922' dateline='1376474350'There's been a few coins that look like this posted before and I think the consensus was an acid bath.

That was my thinking as well. :angel:

ausjack · August 15, 2013, 08:15:47 AM

I too have noticed the high amount of coins that are just trashed eg

and the really dark one is 2010 so they aren't all old coins either

Goldseeker · August 15, 2013, 10:04:58 AM

With my experience e in detecting coins, most of the brown coloured coins above have come from being submerged in fresh water for a time.

markn · August 15, 2013, 10:16:26 AM

Acid dipped.

runway · August 22, 2013, 09:39:24 PM

Interesting topic
The brown 20c and 10c I have seen before they are grubby looking and no place in any collection

ErikP · August 22, 2013, 10:13:03 PM

Hi coin change 20 cent 2008 coin and not any clue whats caused the ripples over the surface. We can see marks obvious post mint other coin damage but notice [attachment=2274]much rippling is below the raised areas.
Any ideas appreciated. Regards ErikP

enworb · August 22, 2013, 10:14:36 PM

its all pmd

ErikP · August 22, 2013, 10:23:25 PM

[attachment=2275]Hi, same 2008 20cent with image closer onto the 20. Regards ErikP

[attachment=2276]Hi, other side doesn't have the same see image. Regards ErikP

Fulvio · August 22, 2013, 11:07:05 PM

Almost certainly Deliberate PMD. Someone's been having fun with it.
Pity. The Obverse looks like it might have a planchet flaw, and if so, they ruined it.