Crossword Clue:

avion stamp on a letter to Spain

AnswerCrossword Clue
POR... aviĆ³n (stamp on a letter to Spain)
POR... avion (stamp on a letter to Spain)
SRTAAbbr. on a letter to Spain
POSTMARKStamp on a letter
AIRMAILSPuts a six-cent stamp on a letter.