<p>@silverd510, who started the #fiestatuesday tag, mentioned in a comment that he wanted to see this coin, so here it is.</p> 
<p>This is the design of the silver Onza before the Winged Victoria silver onza.<p>
<p>Prior to the release of the .999 silver Libertad Onza,  the Mexican Onza was a big heavy coin of sterling silver.</p>

<center><h1>1980 Mexico 1 oz Silver Onza Balance Scale </h1> Contains 33.625 grams of .925 fine Silver for total of 1 oz of Silver. It weighs slightly more than a troy ounce because it is 92.5% purity.</center>
<center>https://images.hive.blog/DQmfQanttDuGVr99PXD8LJ1yikfjMNMKqLfPnZ1FMS2zLXC/onza%201980%20Obverse%20A.jpg</center>
<b>Obverse:</b>  "Casa de Moneda de México" and the date with an image of a screw press.
Coin mint called "de balancín" (of sway), used in Mexico City Mint to make their first coins. This device uses the rotation of a pole on top with weight on a side to get enough speed to force a spiral down and mint the coin (later updated to use steam and then electric motor but the method was the same).
<b>Lettering:</b> CASA DE MONEDA DE MEXICO. Translation: Mexico Mint house

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<center>https://images.hive.blog/DQmNikqq18HADp64ZTj6R4EMmkpva8oGWPb2QfMty6djqm9/Onza%201980%20ReverseA1.jpg</center>
Reverse
Scale as center piece. With ounce weight in legend around. Fineness at top-left. Weight in grams at center bottom, and mint under.
<p>Lettering: UNA ONZA DE PLATA PURA, LEY .925 PESO 33.625 GRAMOS Mo. <b>Translation:</b>One pure silver ounce, Fineness 0.925,  Weight 33.625 grams,  Mexico City Mint
<center><h1>1 Onza Medallic Silver Bullion Coinage</h1></center>
<center>https://images.hive.blog/DQmZeokinJSnVfRATwKxWr9uhvLJqHZWi5KtggsLR4z9GcS/image.png</center><a href="https://en.numista.com/catalogue/pieces13398.html">Information Source</a>
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<center><h1>😍#ilikeitalot!!!😍</h1></center>
<center>The Fiesta Tuesday tag is hosted by @silverd510 for anyone to showcase coins from one of the oldest mints in the world. Join us- it is a fiesta💃🌮!</center>
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<center><h2>😊 Stay AWESOME, beautiful people!!!😊</h2></center>
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<center>♥.•:¨¨:•.♥.•::•.♥.•:¨¨*:•.♥</center>
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<center><h2>Thank you for stopping by to view this article. <p>I post an article daily, and I hope to see you again soon!</p></h2></center>
<center><h2>@silversaver888</h2></center>
<center><b>Hugs and Kisses 🤗💕💋!!!!</b></center
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