Aerogram from Singapore

Yesterday I got not only four postcards but also an Aerogram from Singapore.

An Aerogram is a thin lightweight piece of foldable and gummed paper, which is used to send messages via airmail. The letter and the envelope are one and the same. Aerograms are mainly prepaid. 

On the Aerogram is a advertising postmark for the World Stamp Exhibition in Singapore.

Thank You very much Miguel!