South America
1985 International Youth Year – Stamp Exhibition “ARGENTINA ’85” block of 1985 Overprinted
1985 International Youth Year – Stamp Exhibition “ARGENTINA ’85” block of 1985 Overprinted
1985 International Stamp Exhibition “ARGENTINA ’85” – Buenos Aires – Stamps on Stamps
1985 International Stamp Exhibition “ARGENTINA ’85” – Buenos Aires – Stamps on Stamps