Airmail cover with 'LEGATION DE BELGIQUE AU CENTRE-AMERIQUE ET A PANAMA' handstamp at top and circular cachet below franked with 1929 20c on 15p black TRAIN issue with 'Airmail' overprint (SG 242) tied by GUATEMALA CITY cancel dated 18 JUN 1935. Addressed to COSTA RICA with arrival cds on reverse with damaged cinderella label.