[Cicero]

I was going to ask why the Queen of Portugal would have a halo, but evidently the Queen, Elizabeth of Aragon, was sainted, and was known as St. Elizabeth of Portugal.

[Cicero]

That would seem to give us a date, since the medal was presumably made after she was sainted. Wikipedia says:

“Miracles were said to have followed upon her death. She was beatified in 1526 and canonized by Pope Urban VIII on 25 May 1625,[5] Her feast was inserted in the Roman Catholic Calendar of Saints for celebration on 4 July.”

[Cicero]

Might as well follow this up. Here’s her life from “Butler’s Lives of the Saints.”

http://www.bartleby.com/210/7/081.html