(Jul 28, 2012)
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| Reference | Köln 163 | Billon Silver Tetradrachm 24mm (13.25 grams) of Alexandria, Egypt, dated regnal year 11,64/65 A.D.
He reduced the weight of the denarius from 84 per Roman pound to 96 (3.85 grams to 3.35 grams)
He also reduced the silver purity from 99.5% to 93.5%—the silver weight dropping from 3.83 grams to 3.4 grams
Furthermore, Nero reduced the weight of the aureus from 40 per Roman pound to 45 (8 grams to 7.2 grams)
The size of this complex is debated (from 100 to 300 acres)
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