1984 was the first year of issue of the one dollar coin after the $1 note was removed and a plentiful 185,985,000 were issued into circulation. This one dollar coin is struck on a cupro-nickel planchet intended for a 10c piece, underweight at 5.6g for a dollar hence the slight weakness near the rims on the coin. A regular dollar coin weighs 9 grams.
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