Silver Ounce (1 oz), Private Bullion, Coin Type from Mexico

Silver Ounce (1 oz), Private Bullion, Coin Type from Mexico (issued 1949 - 1980)

Coin Type	Silver Ounce (1 oz), Private Bullion

La Casa de Moneda de México (the Mexican Mint) was established in 1535 and is the oldest mint in the Americas. Apart from manufacturing all the circulation coinage for Mexico, the mint also strikes coins in the internationally popular one troy ounce (1oz) of silver format.

Some of these are not legal tender and are issued as a "store of value" based on the intrinsic value of the precious metal they are made of; they are sometimes called "medallic coinage" and are a type of "private" (not government issued) bullion. The first of these were made in 1949.

The coins weigh 33.625, which at 92.5% ("sterling silver") purity means their pure silver content is 31.103, or exactly one troy ounce silver weight (ASW 1.000).

Obverse

The obverse of the coin shows at its centre a screw press with two flyweights, as used for coin minting before modern presses were introduced.

Around above, the name of the mint: CASA DE MONEDA DE MEXICO (the Mexican Mint).

Below left, the date of issue [year].

The border is toothed, with staggered sizes of the teeth.

Obverse Inscription	CASA DE MONEDA DE MEXICO [year]

Reverse

The obverse of the coin shows at its centre a pair of scales as historically used to measure weight.

Around the rim, the inscription UNA ONZA DE PLATA PURA (one troy ounce of pure silver).

Above left, LEY .925 (purity 92.5%). Below the scales, PESO 33.625 GRAMOS (weight of 33.625 grams; "peso" in this context is "weight" and not the currency name).

Below that, the Mo mint mark of the Mexican Mint (large letter M above which a small o).

The border is toothed, with staggered sizes of the teeth.

Reverse Inscription	UNA ONZA DE PLATA PURA LEY .925 PESO 33.625 GRAMOS

Edge	Milled	Edge Inscription	None

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Silver Ounce (1 oz), Private Bullion: Details

Country	Mexico
From	1949
To	1980
Material	0.925 Silver
Designer
Technology	Milled (machine-made)
Shape	Round
Orientation	Coin Alignment (Axis 6)
Size	41.5000 mm
Thickness	3.0000 mm
Mass	33.6250 g

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Silver Ounce (1 oz), Private Bullion, Coin Type from Mexico - detailed information