KM#Pn16 designates this as a pattern issue — a test striking produced for official evaluation rather than general release. Ecuador's 1976 coinage program involved transitional decisions about alloy composition as the country moved away from earlier silver-content fractions, and brass was among the candidate materials assessed during that period. Whether this specific striking advanced beyond internal review is not firmly documented in standard references.
KM#Pn16 designates this as a pattern issue — a test striking produced for official evaluation rather than general release. Ecuador's 1976 coinage program involved transitional decisions about alloy composition as the country moved away from earlier silver-content fractions, and brass was among the candidate materials assessed during that period. Whether this specific striking advanced beyond internal review is not firmly documented in standard references.