Contingent sovereign debt has the potential to create important welfare gains--but actual issuance is rare. Using hand-collected archival data, we examine the first known case of large-scale issuance of contingent sovereign debt in history. Philip II of Spain entered into hundreds of contracts...

Philip II of Spain accumulated debts equivalent to 60% of GDP. He also failed to honor them four times. We ask what allowed the sovereign to borrow much while defaulting often. Earlier work emphasized either banker irrationality or the importance of sanctions. Using new archival data, we show...