Can you "find beauty"?

There is such a plot in Shakespeare's masterpiece The Merchant of Venice:

Portia, a rich girl in Belmont, is not only beautiful, but also perfect in virtue. Many princes and grandchildren came to propose to her. However, Portia has no freedom to choose marriage. Her late father stipulated in his will that "guessing the box is a marriage", otherwise, the family would cancel her inheritance right. Portia is a very filial daughter, and she resolutely abides by her father's last words.

Portia's family has three boxes: a gold box, a silver box and a lead box. Of these three boxes, only one contains a portrait of Portia. Three boxes are engraved with a sentence: the words engraved on the gold box are "the portrait is not in this box"; The inscription on the silver box is "The portrait is in the gold box"; The inscription on the lead box is "The portrait is not in this box". On a big piece of paper next to the three boxes, it says, "Only one of these three sentences is true."

Portia's father's last words were: If any suitor can guess which box Portia's portrait is put in through the above four sentences, Portia will marry who.

If you were from that era, could you marry back the beautiful daughter of this rich businessman?