Fruit identification
it looks like medlar. Medlar is a fruit sized about 4cm (1 1/2 inch). it must be common medlar.



You can find out more about this interesting fruit here at Wikipedia.


  The medlar was already being cultivated about three thousand years ago in the Caspian Sea region of northern Iran and Azerbaijan. It was introduced to Greece around 700 BC, and to Rome about 200 BC. It was an important fruit plant during Roman and medieval times. By the 17th and 18th centuries, however, it had been superseded by other fruits, and is little cultivated today.