South America c1970-6 naval covers x 3 to same NZ address, all with naval ships' cachets, incl a) Chilean Navy training barque "Esmeralda" (posted Talcahuano, Chile); b) Mexican Navy transport "Durango" (on NZ stamp); c) Colombian (?) Navy training barque "Gloria" (signed), posted Wellington NZ 30/5/70. Fine.