I've received quite a few postcards of books recently and this looks like another. But it's different, it's a piece of history. It's the joint declaration on the future of Hong Kong, signed by Margaret Thatcher, then Prime Minister of the UK, and Zhao Ziyang, Prime Minister of China. It was signed in Beijing in 1984 before the big hand over of Hong Kong to China in 1997.
It was sent to me from the USA but it was bought in Hong Kong.
This is a post for Postcard Friendship Friday hosted on Beth Niquette's blog, The Best Hearts are Crunchy.