Twenty-year 6% gold dollar loan from 1920. - A set of 2 $50 and $100 bonds, converted in 1938 (interest rate reduced to 4.5% - dark blue print in the middle of the bonds).
Loan repaid by the government of the People's Republic of Poland in 1972-1980 (in Poland, purchase at 36.5% of face value, equivalent paid in PeKaO commodity bills).
Coupon sheet attached to each bond after conversion - reduction of interest rate.
