(Sep 27, 2012)
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The Spanish eight reales coin was set at a weight of 423.9 grains (27.47 grams) of .9305 fine silver
Spanish regulated coinage was not only minted throughout Spain but was also produced in Spain's colonial possessions
As early as 1536, a year before the coinage reform, Spanish colonial silver coins were minted in Mexico City
With inferior quality cobs being minted at most mints in the Viceroyalty of Peru, laws were finally passed in 1728 and 1730 mandating modern minting techniques be employed
Any clipping or filing would be immediately evident as it would mar the edge design
During the production of these coins some minor modifications were made in the location of the mintmark and assayer's initials
Also, on the eight reales denomination the design of the crown on top of the left pillar was changed in 1754
This time the weight remained the same but the fineness of the silver was lowered to .90278
The reverse was also modified
REX (King of Spain and the Indies) followed by the mintmark, the denomination and the assayer's initials
The corded edge of the eight reales was also replaced with an edge design comprised of alternating circles and rectangles
These coins, which continued to be minted through 1821, are known as the "portrait" or "modified pillar" series
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