1 Onza (Medallic Silver Bullion Coinage) Coin

1 Onza (Medallic Silver Bullion Coinage)

Country: Mexico
Denomination: 1 troy ounce of silver (1)
Year: 1978-1980
Material: Silver (.925)
Weight: 33.6250 g
Shape: Round
Diameter: 41.5 mm
Type: Non circulating coin
Catalog list: mexico

Description:

Obverse

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).

With legend on top-right. Date at bottom left

Reverse

Scale as center piece. With ounce weight in legend around. Fineness at top-left. Weight in grams at center bottom, and mint under.

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