Unusual 20¢ Error. - Coin Community Forum

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Author	Replies: 7 / Views: 2,962
Jeff Pillar of the Community Australia 877 Posts	Posted 06/19/2010 6:29 pm Just found this unusual 20¢ coin. Reverse is completely normal but obverse has part of a 50¢ reverse in the centre. The 50¢ pattern is mirror image and that section of the coin appears to be very slightly raised. The rim and outer portion of the coin appear normal. As best I can check it weighs about 0.3g more than a normal 20¢. My theory is a 50¢ has delaminated and, somehow, the detached portion has been stamped in with the 20¢. Presumably there is a 50¢ coin with a large portion of the reverse missing. If you find it I will buy it. The chances of ever getting the "pigeon pair" would be quite remote I suspect. How common is this type of error? I haven't seen another. I do have a higher resolution scan. Unfortunately it does not show up as clearly on the scan as it appears looking at it. cheers Jeff PS. Do you want me to include this with my next discard batch Nancy? [As if.] Report this Post to the Staff

Jeff Pillar of the Community Australia 877 Posts	Posted 06/19/2010 10:18 pm Or is it post-mint mutilation? Jeff Report this Post to the Staff
Nevol Formerly nancyc Australia 5385 Posts	Posted 06/21/2010 4:16 pm Aren't there any opinions on this coin? Where are all the experts? Gone AWOL? life is a mystery to be lived not a problem to be solved Report this Post to the Staff
nod2003 Pillar of the Community United States 3294 Posts	Posted 06/21/2010 4:27 pm Could it be glue residue? I have had something similar with US coins and it was glue. Report this Post to the Staff
Sap Moderator Australia 16849 Posts	Posted 06/21/2010 8:42 pm Glue (or a similarly transparent resinous substance) was my first thought. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
Nevol Formerly nancyc Australia 5385 Posts	Posted 06/21/2010 8:55 pm OK, Thanks folks! I have to admit I would never have thought that it might be glue, but I can see now that it could be. I was thinking more along the lines of a 'smash' job, done with a cut out of a 50¢, then smashed with a hammer or squeezed into the 20¢ in a vise. I completely missed the bit where Jeff says the area appears to be slightly raised! Duh! I've had plenty coins with glue all over them, but they've never had any impressions of other coins in the glue, so that was never on my Radar. Let's wait & see what Jeff thinks of your explanations. life is a mystery to be lived not a problem to be solved Report this Post to the Staff
Jeff Pillar of the Community Australia 877 Posts	Posted 06/21/2010 11:55 pm Well done. I had picked at the edge of the raised area with my fingernail and it felt very firm. After reading the suggestions I used a fine jeweller's screwdriver and managed to raise a flake. It is some type of transparent glue or resin. Whatever it is (epoxy I suspect now) it is immune to ethyl alcohol, isopropyl alcohol and acetone -tried them all on it. A much simpler explanation than my far fetched theory. I am a bit disappointed that my theory didn't get some robust criticism. {Of course I wasn't trying to stir a debate. Well....maybe.} thanks Jeff Edited by Jeff 06/21/2010 11:56 pm Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 07/17/2010 06:25 am I could not really get a good understanding fom the image on the screen. I did not pipe up until now, because I could'nt get my mind around how the mint could produce such an error coin With the above comments I really feel that someone has had some fun in his backyard workshop. The 'item' should really be kept by you, anyway, just in case...... Report this Post to the Staff
	Replies: 7 / Views: 2,962

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