12885
17th century In 1642 , two distinct reales were created , the real de plata ( made of silver ) and the real de vellón ( made of billon , or " less than half silver " ) .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None