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100 Pesos Pattern, Mariposa Monarca, copper

Issuer Casa de Moneda de México
Year 1987
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Value 100 Pesos (100 MXP)
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Reverse description Multiple Monarch butterflies (Danaus plexippus) are arranged in a dynamic, naturalistic grouping that fills the field, depicted in high relief with finely engraved wing venation against a deeply mirrored proof background. The inscription mariposa monarca appears in two lines at center-left in a serif italic font. The denomination $100 is prominently displayed in large numerals to the right, with the date 1987 above it. The Mexico City mint mark Mo appears below and to the right of the denomination, rendered as a small superscript 'o' above a capital 'M'.
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Mintage 1987 Mo - Proof
Additional information

Patterns from Casa de Moneda de México in the late 1980s were frequently produced as internal design explorations or for presentation to Banco de México, with no obligation — and often no intention — of proceeding to circulation. This copper piece was struck the same year Mexico's monetary system was still absorbing the consequences of the 1982 peso crisis and the inflation spiral that followed, conditions which made a 100-peso circulating copper coin an increasingly awkward proposition.

The Monarch butterfly had been proposed as a national symbol subject partly through conservationist pressure; the species' overwintering colonies in Michoacán were already drawing international attention by the mid-1980s.

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