Purity
Note to the The Currency Holders And Store Holders;The Disease Of Desire by John Ruskin

The purity of the drachma and sequin were not without significance of the state of intellect, art, and policy, both in Athens and Venice;—a fact first impressed upon me ten years ago, when, in daguerreotypes of Venetian architecture, I found no purchasable gold pure enough to gild them with, but that of the old Venetian sequin.