[Closed] Judgement call ...

The below coin images are the same but different. Design and date are the same, but different metal. One is plain Zinc, the other is blackened Zinc.

There are three ways that I see that it can be listed.

1. Separate page for each, because of the metal difference.
2. One page, but two lines in the mintage indicating metal difference.
3. One page, one line in the mintage listed as variations exist.

Myself, I would choose #2.  BUT, under the rules for listing ...  ???

Personally I would have only one listing.  The second one is simply more circulated.

Cita: glorkarPersonally I would have only one listing.  The second one is simply more circulated.

The second is Blacken Zinc, not that it's more circulated.

Hello,

As far as I know: other metal = other page      

Enjoy Life,
J.

I guess I didn't realize there were multiple kinds of zinc.  Learned something new.

Have you read the "Guidelines..."? Come on! It's easy.

https://en.numista.com/catalogue/contributions/instructions.php

The first paragraph says:

A page describes a coin type. It may group several variations whenever a small design detail varies and the KM numbers have the same main part, like KM#3.1 and KM#3.2. On the other hand, if the coin uses a different metal, create another page, like KM#3a and KM#3b

Cita: zegeriHave you read the "Guidelines..."? Come on! It's easy.

Yes, I have read the "Guidelines...", and English is my native language. BUT >>>  I have encountered that all referees do not ref the same. As in, "Rejected, it's Zinc". Some people don't know there is a difference in Blackened Zinc, Black Zinc and Zinc ..

My thoughts were, best to get a consensus of opinion on the "Guidelines..." prior to submitting the page for validation.

Thank You Very Much for the replies...!!!

"Blackened zinc" sounds like a variety to me, not a new design type or material change.  Zinc is zinc, even with different surface treatments.

Cita: CeruleanZinc is zinc, even with different surface treatments.

So therefore, Copper plated Zinc is no different than plain Zinc, and only considered a variant of Zinc because it's only a surface treatment....

No, because copper plating isn't a surface treatment... it's a different metal, a different composition.  

If the coin is entirely zinc, then the composition doesn't change if the surface is a slightly different shade of gray.  

If it were up to me, I'd merge the colorized and non-colorized Canadian quarters together.  Paint is not part of the metal composition.

Cita: CeruleanNo, because copper plating isn't a surface treatment... it's a different metal, a different composition.

GRANTED... Copper is a different metal than zinc...  BUT >>>  Plating is still a surface treatment... regardless of what material or metal that is used

Punkt, Schluss, aus  ....

Cita: derfPlating is still a surface treatment... regardless of what material or metal that is used

Plating is a composition change.  Annealing is a surface treatment.

End of discussion ....

I agree with Cerulean on this one. Plated coins MUST be separate from single-metal coins, but coins with modified surfaces (lacquered British pennies) are the same.