For donations up to $500, you need a receipt listing the organization, date of the donation and a description of the property and its value. For donations over $500 but less than $5,000 you also need a written acknowledgement and an appraisal if the gift is clothing or furniture.
As of 2015, the current king and queen of Spain are King Felipe IV and Queen Letizia. King Felipe IV was crowned on June 19, 2014 after his father, King Juan Carlos, abdicated following a 39-year reign.
It's like this, for example, King in the olden days had the power, but now its' Elizabeth who has the Throne of England, so Elizabeth is the Proper King-Like-Queen of the England. And so of course, Camilla will be Queen, when Charles becomes the King of England.