40181
In return the people were given iron jewellery such as brooches and finger rings , often with the inscription Gold gab ich für Eisen ( I gave gold for iron ) , or Für das Wohl des Vaterlands ( For the welfare of our country / fatherland ) , or with a portrait of Frederick William III of Prussia on the back .
 Frederick William III of Prussia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Frederick William III of Prussia