This is a 1915 Austria Ducat, 3.49 grams of solid gold that is uncirculated. This coin is made of gold and has not been circulated, making it a valuable and sought-after collector's item. It features a design from 1915 and has not been officially certified, adding to its authenticity and appeal to numismatists and collectors alike. The subtle weight of 3.49 grams adds to the intriguing aspect of this rare and historical coin.