Answers.Body: <p>A quick search on Bricklink gives the following results:</p>
  
  <p>Catalog: Parts: Minifig, Head: Search Results for dual sided</p>
  
  <ul>
  <li>Unknown year (41) </li>
  <li>2001 (1)</li>
  <li>2002 (10)</li>
  <li>2005 (4)</li>
  <li>2006 (7)</li>
  <li>2007 (4)</li>
  <li>2008 (4)</li>
  <li>2009 (18)</li>
  <li>2010 (27)</li>
  <li>2011 (43)</li>
  <li>2012 (86)</li>
  <li><p>2013 (90)</p></li>
  <li><p>335 Total Parts (View All)</p></li>
  </ul>
  
  <p>This search was caried out at <a href="http://www.bricklink.com/catalogList.asp?pg=1&amp;q=dual%20sided&amp;catLike=W&amp;catType=P&amp;catID=238&amp;v=1" rel="nofollow">http://www.bricklink.com</a></p>
  
  <p>Assuming that the Bricklink data are complete and correct, there are 41 double sided heads without a known release date, and the trend seems to have started in 2001 with this one:</p>
  
  <ul>
  <li><a href="http://www.bricklink.com/catalogItem.asp?P=3626bpx118" rel="nofollow">Minifig, Head Dual Sided HP Quirrell / Voldemort Pattern</a></li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-11T08:15:13.583Z
Answers.Text: Except that even that head was included in sets as early as 1993 according to bricklink...
Answers.UserDisplayName: gev
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-11T09:57:09.850Z
Answers.Text: @gev - fixed the link.
Answers.UserDisplayName: Zhaph - Ben Duguid
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-11T14:06:46.340Z
Answers.Text: +1, but I'm going to say (arbitrarily perhaps) that Quirrell / Voldemort doesn't count, because it's not two different faces / emotions of the same person, it's a head that actually has two faces (canonically even). I'll update my question to make this more clear.
Answers.UserDisplayName: McKay
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-11T22:20:53.440Z
Answers.Text: I have reviewed the answers given, and have looked at Bricklink again to check every set that every yellow-skinned minifigure head came in.
Answers.UserDisplayName: Windfire
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-11T22:27:10.053Z
Answers.Text: I have reviewed the answers given, and have looked at Bricklink again to check every set that every yellow-skinned double-sided minifigure head came in.  (I ignored all non-yellow as they must have been made later.)   The earliest if could find (and that I can remember buying) that match the emotions criterion are: 3626bpx116 and 3626bpx117 from 'Spiderman' and 'Studios' 2002/2003
Answers.UserDisplayName: Windfire
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-10T23:36:49.043Z
Answers.LastActivityDate: 2016-03-19T14:35:20.667Z
Answers.LastEditDate: 2016-03-19T14:35:20.667Z
Answers.UserDisplayName: Windfire
Answers.Body: <p>I was a child with wealthy parents during the early 90's and thus own almost every set released during that period. apart from the harry potter one mentioned, the first that showed the same face with different emotion I remember getting was a small set that included a new skeleton face as well as a mummy. This Mummy was double sided with one face asleep, and one face awake.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-01-04T07:43:40.957Z
Answers.LastActivityDate: 2014-01-04T07:43:40.957Z
Answers.UserDisplayName: JayBol
Body: <p>Some of my minifigs (like Iron Man, and Bilbo Baggins, and Harry Potter) have two different faces to show different emotions (usually something happy and something unhappy or upset or angry). How long have they been doing that? What was the first minifig to have 2 different faces to choose from?</p>
  
Tags: <minifigures><history>
Title: Which was the first set / minifig with two faces to choose from?
UserDisplayName: McKay
ThreadText: # Which was the first set / minifig with two faces to choose from?
  
  (Asked by: username_0 on 2013-12-10)
  
  Some of my minifigs (like Iron Man, and Bilbo Baggins, and Harry Potter) have two different faces to show different emotions (usually something happy and something unhappy or upset or angry). How long have they been doing that? What was the first minifig to have 2 different faces to choose from?
  
  **Tags:** minifigures, history
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2013-12-10. Score: 8
  
  A quick search on Bricklink gives the following results:
  
  Catalog: Parts: Minifig, Head: Search Results for dual sided
  
  * Unknown year (41)
  * 2001 (1)
  * 2002 (10)
  * 2005 (4)
  * 2006 (7)
  * 2007 (4)
  * 2008 (4)
  * 2009 (18)
  * 2010 (27)
  * 2011 (43)
  * 2012 (86)
  * 2013 (90)
  * 335 Total Parts (View All)
  
  This search was caried out at [http://www.bricklink.com](http://www.bricklink.com/catalogList.asp?pg=1&q=dual%20sided&catLike=W&catType=P&catID=238&v=1)
  
  Assuming that the Bricklink data are complete and correct, there are 41 double sided heads without a known release date, and the trend seems to have started in 2001 with this one:
  
  * [Minifig, Head Dual Sided HP Quirrell / Voldemort Pattern](http://www.bricklink.com/catalogItem.asp?P=3626bpx118)
  
  > **Comments:**
  > **username_2**: Except that even that head was included in sets as early as 1993 according to bricklink...  
  > **username_3**: @username_2 - fixed the link.  
  > **username_0**: +1, but I'm going to say (arbitrarily perhaps) that Quirrell / Voldemort doesn't count, because it's not two different faces / emotions of the same person, it's a head that actually has two faces (canonically even). I'll update my question to make this more clear.  
  > **username_1**: I have reviewed the answers given, and have looked at Bricklink again to check every set that every yellow-skinned minifigure head came in.  
  > **username_1**: I have reviewed the answers given, and have looked at Bricklink again to check every set that every yellow-skinned double-sided minifigure head came in.  (I ignored all non-yellow as they must have been made later.)   The earliest if could find (and that I can remember buying) that match the emotions criterion are: 3626bpx116 and 3626bpx117 from 'Spiderman' and 'Studios' 2002/2003  
  
  ---
  
  ### Answer by username_4 on 2014-01-04. Score: 1
  
  I was a child with wealthy parents during the early 90's and thus own almost every set released during that period. apart from the harry potter one mentioned, the first that showed the same face with different emotion I remember getting was a small set that included a new skeleton face as well as a mummy. This Mummy was double sided with one face asleep, and one face awake.
  
  
  ---
  
  