Outer 1927 Calcutta local post with India 1A chocolate tied by Calcutta GPO CDS dated 1 JLY 27, backstamped by Park Street Calcutta dated 2 JLY 27. Front inscribed “This letter was carried over the city of Calcutta and its environs by the famous DH “G-EBMO”, the diminutive aeroplane which won the Kings Cup in 1926, and made the historic flight from London to Delhi in 1926-27″. Lovely piece