The operative distinction is:
1. Depreciation: a coin still circulates, but its purchasing power or exchange value falls.
2. Obsolescence: traders cease accepting it as payment.
Its monetary status survives the first change but disappears in the second. A fall in value alone does not establish Quduri's specific case of complete loss of circulation.
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Obsolescence versus loss of value
Bab al-Sarf: Circulating Fulus, Obsolete Coins and Money-Changer Exchanges
The operative distinction is:
1. Depreciation: a coin still circulates, but its purchasing power or exchange value falls.
2. Obsolescence: traders cease accepting it as payment.
Its monetary status survives the first change but disappears in the second. A fall in value alone does not establish Quduri's specific case of complete loss of circulation.