Milan, or Milano as it's known in the native language of Italian, is quite a historical city. Located in northwestern Italy, it was founded by the Celts, then conquered by the Romans, and in 1183 made a Duchy. It existed independently in some form, often as part of a collection of states, until Italy united in 1861.
In 1713 the Treaty of Utrecht was signed, granting the city and the territories it controlled to Austria. These coins were struck during the reign of Maria Theresa ('M. THERESIA' on the coin) under her authority as Archduchess of Austria. Catalog values are decent, with some coins being quite valuable:
worn: $5 US dollars approximate catalog value
average circulated: $40
well preserved: $85
fully uncirculated: $500
coins with no mint mark are rare - multiply the above values by 4
coins dated 1777S are more common and catalog at $20 average circulated, $300 fully uncirculated
The mint mark on these coins is located under the bust of Maria Theresa. The possible mint marks are S, W or none. As noted above, coins without a mint mark are rare.
The coin in our picture comes from ARS Classica in London, where it sold for 220 euros (about $300 US dollars) in a 2012 auction. CoinQuest thanks ARS for use of their coin photo.
Damaged coins will be worth a few dollars at most. Please read our Important Terminology page found at the top left in order to properly interpret the catalog values used on this page.