💬 [E7191] Graham argues foreign government bonds are fundamentally unenforceable contracts where payment depends on political expediency rather than economic capacity or legal obligation. Specific revenue pledges like the Dawes Loan (German 7s due 1949) and Sao Paulo Secured 7s (due 1956) proved worthless after defaults in 1934 and 1932 respectively, illustrating that sovereign creditor-debtor relationships are ultimately political rather than legal.

💬 [E7190] Graham's historical analysis of sovereign bond defaults shows that of 42 countries analyzed during 1921-1932, only 3 (Canada, Netherlands, Switzerland) maintained unquestioned investment ratings. Even France and Great Britain were considered speculative during 1921-1922, establishing a framework for understanding systematic sovereign debt risk during severe stress periods.

🟢 [E7192] Graham establishes rigorous minimum size requirements for bond investment safety: 10,000 population for municipalities, $2 million gross revenue for public utilities, $3 million for railroads, $5 million for industrial companies, and $10 million annual revenue as alternative to 500-mile requirement for railroads. These size thresholds provide important safety margins by ensuring issuers have sufficient scale to service obligations.

🟢 [E7193] Graham argues against blanket categorical exclusions of entire bond types, contending that rigid rules prevent proper security-level discrimination. However, he makes a specific exception for foreign sovereign debt due to their fundamentally unenforceable nature, lack of bondholder remedies, and catastrophic historical default rates (39 of 42 countries failed investment-grade standards during 1921-1932).

💬 [E7194] Graham's 1921-1932 sovereign debt analysis provides a structural framework for understanding how severe economic cycles expose the gap between sovereign credit ratings and actual creditworthiness. The finding that 93% of rated sovereign nations (39 of 42) lost investment-grade status during this period suggests that sovereign credit quality is highly cyclical and systematically overrated during benign conditions.