Plain commercial cover franked with 1c purple and pair 2c chrome yellow (SG 137/138) tied by fine CORREO AEREO SAN JOSE - LIMON cds dated JAN 9 1924. Addressed to LIMON with arrival cds dated JAN 9 1924 on reverse (with day & month inverted). This cover appears to have been flown on one of the five emergency flights by the US Army although the date does not directly tie to a specific flight. Unusual.