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Group Of Seven - Golden Coin?

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Pillar of the Community
Canada
4984 Posts
 Posted 01/21/2021  9:02 pm  Show Profile   Bookmark this reply Add john100 to your friends list Get a Link to this Reply
PCGS would probably grade it genuine which just destroy a coin"s value, just chuck it on ebay with a link to this thread, seems like your storage environment is perfect to create this toning
Pillar of the Community
United States
2374 Posts
 Posted 03/25/2022  9:18 pm  Show Profile   Check canadian_coins's eBay Listings Bookmark this reply Add canadian_coins to your friends list Get a Link to this Reply
Quick update...

I'm still debating if I should have this coin certified. One of the last coins I have in my collection...





Pillar of the Community
Canada
1311 Posts
 Posted 04/08/2022  2:43 pm  Show Profile   Bookmark this reply Add Dcadon to your friends list Get a Link to this Reply
I submitted this picture to my Mint Rep to get the mint's response to the apparent Alchemist ability of my sealed closet. My coins were all sealed in zip lock bags on a shelf in a cupboard that was rarely opened for 10 or 12 years. In the dark.
I laid them out for a random picture. All coins are 'Fine' silver.


Here is the reply from my rep:

Quote:
"'The effect of ageing is a natural occurrence that is inherent in the coining business in that over time effects such as tarnish, toning or discolouration will appear. These effects are inevitable but normally slow due to process enhancements that we have developed at the Royal Canadian Mint''.

Now, over time we have worked with and changed lacquer supplier as some of the older finished coins were not as UV resistant. Keep in mind this can still affect coins stored in the dark away from oxygen and lighting that could speed up the process.

We have attempted to rework some coins in the past for customers, however, the outcome in most cases was not a successful one because the process of stripping, polishing and re-lacquering runs the chance of destroying the coin which cannot be replaced for the customer.
Pillar of the Community
Canada
678 Posts
 Posted 04/09/2022  09:27 am  Show Profile   Bookmark this reply Add Alex A to your friends list Get a Link to this Reply
Interesting that the mint reworked some coins. I did not know they did this, so interesting information.

Thanks for posting. Cheers!
Pillar of the Community
United States
2374 Posts
 Posted 04/09/2022  5:19 pm  Show Profile   Check canadian_coins's eBay Listings Bookmark this reply Add canadian_coins to your friends list Get a Link to this Reply

Quote:
Now, over time we have worked with and changed lacquer supplier as some of the older finished coins were not as UV resistant.




Lacquer!! Interesting side effect. I spotted the use of lacquer 15+ years ago.



Read Commems post on lacquer here:
http://goccf.com/t/378362


Pillar of the Community
Canada
1311 Posts
 Posted 04/20/2022  6:23 pm  Show Profile   Bookmark this reply Add Dcadon to your friends list Get a Link to this Reply
Ok, please explain this one. These 'Olympic Quarters' were sealed, and distributed by Petro Canada (gas station). I collected them in the 'collector tin' and left them in their original plastic packaging sealed on a credit card kind of thing. The container was then placed in a closed cabinet, and never exposed to daylight. The pictures provided are opposite sides of the SAME coin. 2 coins of the entire set exhibited exactly the same - gold one side, silver the other. The remainder of the coins were all normal 'silver' colour.



Pillar of the Community
United States
2374 Posts
 Posted 07/02/2022  8:33 pm  Show Profile   Check canadian_coins's eBay Listings Bookmark this reply Add canadian_coins to your friends list Get a Link to this Reply
I saw this coin on eBay and immediately hit the buy now button thinking this was perhaps another occurrence of my golden coin in the same series. These are the images taken from the eBay listing:




I did not fault the seller, but the image did look more golden on the listing. My bad for not asking for more pictures. Here are both coins side by side...



Mine is convincingly golden. To this day I still do not understand what happened to my coin.



Here is a scan:

Edited by canadian_coins
07/02/2022 8:52 pm
Pillar of the Community
Learn More...
United States
8066 Posts
 Posted 07/03/2022  08:11 am  Show Profile   Bookmark this reply Add commems to your friends list Get a Link to this Reply

Quote:
The pictures provided are opposite sides of the SAME coin. 2 coins of the entire set exhibited exactly the same - gold one side, silver the other. The remainder of the coins were all normal 'silver' colour.

Meant to respond to this one weeks ago...

Note the thick "cap" applied to the surface of the reverse side (and only the reverse side) as part of its packaging for Petro Canada. It is this material that is causing the golden colour you are seeing - it's the cap more than the coin that is changing colour.


Collecting history one coin or medal at a time! (c) commems. All rights reserved.
Bedrock of the Community
Australia
19864 Posts
 Posted 07/03/2022  08:47 am  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
What of a theory that the golden tone in this case, could be an off metal strike proof error in aluminum bronze?
Pillar of the Community
Learn More...
United States
8066 Posts
 Posted 07/03/2022  09:12 am  Show Profile   Bookmark this reply Add commems to your friends list Get a Link to this Reply

Quote:
What of a theory that the golden tone in this case, could be an off metal strike proof error in aluminum bronze?

Disproven years back. It's a silver coin with toning.


Collecting history one coin or medal at a time! (c) commems. All rights reserved.
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