Mexico Un Peso  1918 to 1945
Mexico Un Peso 1918 to 1945

Hello, Liz,

Your Mexican peso is made of 0.720 fine silver, with a total 0.3856 troy ounces of silver net. Use a web site such as to find the current price of silver, then multiply that number by 0.3856 to find the base value of your coin. If silver were $17.50 US dollars per ounce, for instance, the base value would be 0.3856 x 17.50 = $6.75. Be sure to look up the price of silver, as it changes every day.

Catalog values for these coins run approximately as follows:

worn: Base silver value
average circulated: $50
well preserved: $150
fully uncirculated: $1500

worn: Base silver value
average circulated: $15
well preserved: $50
fully uncirculated: $200

worn: Base silver value
average circulated: Base silver value
well preserved: Base silver plus $5
fully uncirculated: Base silver plus $15

worn: Base silver value
average circulated: Base silver value
well preserved: Base silver value
fully uncirculated: Base silver plus $5

Look at the three coins in the example pictures. The coin on top, marked AU for About Uncirculated, would catalog between our 'well preserved' and 'fully uncirculated' values.. The coin is in excellent shape with almost no wear and absolutely no problems like stains and scratches. The reason this is not a fully uncirculated coin is because it has lost its frosty, fresh-from-the-mint luster, probably from being exposed to damp air for long periods of time. A sealed numismatic holder would have solved that problem.

Now look at the coin marked VF for Very Fine. There is very noticable wear, especially on the high points like the eagle and snake, and the cap. Most coin collectors call this amount of wear VF, or 'average circulated.' There is a faint scratch across the rays, so that will bump the value downward a little.

The bottom coin is marked XF Cleaned, XF meaning Extra Fine or 'well preserved.' There is actually less wear on the XF coin than the VF coin, so under normal circumstances, the XF would be worth more than the VF. But, it is easy to see that there is something un-natural about the XF coin. In fact, someone has cleaned or polished it with harsh chemicals. That sends collector appeal down to zero, and serious, knowledgeable collectors will not pay more than silver value for this coin.

A coin dealer would probably pay one-half of the catalog price for the AU and VF pieces. An honest dealer would not buy the cleaned XF coin, but a shyster would buy it for $5 and try to sell it to an inexperienced collector for the full XF price.

Coin collecting is a rough hobby to get started in. It is certainly a buyer beware situation. Learn the ropes first and you won't get stung.

Coin: 1556 , Genre: Colonizers and Colonies
Requested by: Liz, Wed, 14-Oct-2009 17:49:19 GMT
Answered by: Chris, Tue, 23-Oct-2012 00:29:58 GMT
Appraisal ok, reviewed by CoinQuest, be sure to use the current value of silver, Thu, 09-Oct-2014 00:46:38 GMT
Requester description: 1919 UN PESO 1919, starburst with libertad, olive and oak leaves, small M, on one side. Other side ESTADOS UNIDOS MEXICANOS, bird on a tree? with a snake in its mouth, olive and oak leaves. Both sides have decoration on outside. On the side edge of the coin it says INDEPENDENCIA Y LIBERTAD.
Tags: mexico un peso meican mex mexicana mexicanos mecican mexio nexicana mexicano mexican starburst libertad liberty olive oak leaves leaf one estados unidos bird tree snake mouth independencia independancia y burst liberate liberity liberte lybertad liberta liberdad liberie leafs leave leaved leafed leafy leavs ones estado estrados star rays ray cap hat starrs stars beams radiating radiates raduate beam readiate radiate radiant hood caps hooded headdress eagle hawk falcon serpent cactus wreath sun sunburst eaglets egals eable egal eagles eag ealge eagel asps snakes asp greenery wreathed rief reif reef wreathe wreat garland wreth wreah wreaths sunrise sunshine sunset sunlight


please help me, how can I tell if the coin is silver? What are the letters OM mean on a coin? thank you ron - Ronald Boczek
If it is genuine and looks like our picture, it is silver. Take your coin to a knowledgeable collector or a professional coin dealer. He or she can tell if it is genuine by an in-person inspection. The OM mark stands for Mexico City, where the coin was minted. - CoinQuest (Paul)

I have a 1933 silver peso on a silver key chain. It has been kept in a safe. What does the numbers o7 on eagles right side of head and the numbers 2o on left side of eagle's head stand for? - Catalina Green
Hi Catalina (that's a neat name you have!) -- the 0720 refers to the purity of the silver in the coin. It is 72 percent pure silver, 28 percent non-precious metal. The actual silver weight (ASW) of your coin is 0.385 troy ounces. At today's silver price of $14.66 US dollars per troy ounce, you coin is worth 0.385 x 14.66 = $5.64 US dollars. See this Coin Facts Wiki page [PRESS HERE] for more details. - CoinQuest (Paul)

when I rotate the coin side to side, the sun ray is upside down, is that normal? if not, does that change the value of the coin? - john mckeever
Yes, that is normal for this coin (and most coins). It is typically referred to as 'coin alignment.' Some coins have a 'medal alignment,' which is when the design on each side of the coin is upright. - CoinQuest (Todd)






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