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 Replies: 12 / Views: 1,740 |
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Pillar of the Community
Australia
1610 Posts |
Hi all, I have a 1979 25 centavo coin from Guatemala. The obverse does not match the corresponding obverse (1977-2000) but instead matches the obverse for 1971-1976. Is this a counterfeit coin or a mistake on Numista? Thanks  |
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Pillar of the Community
United States
1915 Posts |
Your coin looks like a normal KM# 278.1 to me.
What is the link to the particular coin in question do you see on Numista?
Edited by Albert
09/08/2020 5:00 pm
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Pillar of the Community
United States
1543 Posts |
The obverse design had several small changes while staying 278. Until 1980 the date remained italic. The one shown on numista is km 278.5 not 278.1 like yours should be.
Edited by Gincoin43
09/08/2020 5:18 pm
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Pillar of the Community
 Australia
1610 Posts |
Sorry, my mistake. I meant reverse, not obverse. The reverse seems to be 272, definitely not 278 yet the date range indicates 278.
Edited by David Graham
09/08/2020 6:27 pm
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Pillar of the Community
United States
1543 Posts |
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Pillar of the Community
Australia
1610 Posts |
@Gincoin - How confusing. You are right in that it is a 278 obverse but it has a 272 reverse. Does this mean that the reverse can be anything and it is defferences in the obverse that are used to determine coin types like 272 or 278? Sorry if it seems like a stupid question but I've never considered it before.
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Pillar of the Community
United States
1543 Posts |
Quote:
How confusing It's the numista listing that makes it confusing. KM#278 should be broken up by design imo, but maybe they don't have pictures of them all. The third link I included is for only KM#278.1 which shows a reverse/obverse like yours. It seems that 272 and 279.1 differ mainly in the rim design. Neither have a fluffy headed Quetzal. |
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Pillar of the Community
Australia
1610 Posts |
 It seems both the 1977 and 79 have the 272 reverse. This is not a minor die variation. They should have their own KM designation IMHO. |
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Pillar of the Community
United States
1543 Posts |
Quote:
It seems both the 1977 and 79 have the 272 reverse. This is not what I am saying. 278.1, which is several dates, Has a reverse similar, but not the same, as 272; BUT 278.5 and 278.1 are also similar but not the same and 272 is more similar to 268. All their 25 centavos after 1976 have the dotted rim. After 1976 the km# get decimals for design changes. The whole number only goes up with material changes. |
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Pillar of the Community
Australia
1610 Posts |
@ Gincoin - So is what I said earlier regarding coins within a given KM number being dictated by similarity of the obverse and not the reverse is correct?
And one other thing - take the aussie $1 coins KM 84 and 87. Both are made of the same material and have same obverse so why a different whole number KM? Shouldn't 87 just be a variety of 84? Sorry for all the questions and thanks for your patience.
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Pillar of the Community
United States
1543 Posts |
The 1977 and 1979(km278.1) Guatemala 25 centavos have a different reverse than the 1976(272), they also have a different obverse. The different 278 have small differences on either the obverse or reverse,sometimes both.
It does not matter if the 278's are 278.1, 278.2 ect, or 278, 279, 280 in mind 278.1 and 278.2 are not the same number. As Km Is a Krause reference number, numista includes it for your convince, who knows why Krause choose to list it that way, but you can't apply my last statement to every country. You could submit pictures of your coin to numista asking that 278.1 be made into its own entry and it would probably happen.
Edited by Gincoin43
09/09/2020 01:04 am
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Pillar of the Community
Australia
1610 Posts |
@Gincoin43 - It seems subjective on which factors to base coin groups and numbers etc. and depends on who is doing the assigning. I was expecting some sort of standard process which is why it seemed confusing, especially when cataloging coins on Numista from different countries. Thanks for taking the time to answer all my questions!!  |
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Pillar of the Community
United States
1543 Posts |
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Replies: 12 / Views: 1,740 |
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Posted 09/08/2020 3:18 pm
