Early shock
Foundation stress
Early years of Spanish dollar often mixed coin shortages, war finance or fragmented note issue.
Every durable currency has scars. Spanish dollar's crises teach more about institutions than any calm decade.
Episodes below are historical summaries for context, not predictions of the next move.
Crisis episodes
Mid-century
Regime break
War, depression or decolonisation forced convertibility changes.
Inflation bout
Price spike
High inflation tested whether the unit remained a reliable unit of account.
Peg / float crisis
FX rupture
A defended peg or sudden float created balance-sheet damage.
Banking stress
Credit crunch
Bank failures transmitted into money-market and currency stress.
Recent global
Imported shock
GFC, pandemic or sanctions episodes transmitted through dollar funding or commodities.
Lessons
Credibility is scarce
Peg promises last only as long as reserves and politics allow.
Balance sheets matter
FX mismatches in banks and firms turn currency moves into crises.
Communication counts
Surprise regime changes amplify overshoot.
Global dollar spillovers
Even non-dollar currencies feel US rate and liquidity cycles.
Stress indicators
Inflation volatility
40How roughly prices move in this unit.
FX volatility
30Typical turbulence versus major peers (relative).
External financing need
50Dependence on foreign capital to fund deficits.
Reserve buffer
10Official assets available for intervention or confidence.
Policy clarity
20How clearly markets understand the reaction function.