The Tohoku Rakuten Golden Eagles were born as an expansion team following the 2004 season to take the place of the Osaka Kintetsu Buffaloes who had merged with the Orix Blue Wave. They've had no name changes since then and have kept Sendai as their home city.
My source for this is only the Professional Baseball Uniforms Encyclopedia 1936-2013 as History Of Uniform was published in 2005 and so only has the first uniforms the Eagles wore. I'm also using the uniform posts at both YakyuBaka and YakyuDB.
|2006 Konami Baseball Heroes 2 White Edition #B06W076|
|2006 Calbee #138|
|2007 Calbee #267|
|2009 BBM Back To The 80's #127|
|2009 BBM Memory Makers #101|
|2011 Calbee #OP-06|
|2015 BBM Memories Of Uniform #137|
|2013 BBM 2nd Version #609|
2011 Spring Camp Away
2011 Eagle Rainbow
|2015 Eagles Team Set #SS1-12|
2012 Spring Camp Home
2012 Spring Camp Away
|2012 BBM 1st Version #119|
|2015 Eagles Team Set #SS1-11|
2012 Eagle Star
|2015 Eagles Team Set #SS1-14|
|2015 Eagles Team Set #SS1-08|
|2015 BBM Memories Of Uniform #138|
|2015 Eagles Team Set #SS1-10|
|2015 BBM Memories Of Uniform #140|
|2016 BBM The Ballpark Stories #142|
Obviously the uniform subset from last year's Eagles team set was incredibly helpful in doing this post.
PBUE's listing for the Eagles are a bit confusing. There's no home uniform for 2011 indicated and there are what look like identical away uniforms listed for "2010-", "2011" and "2012-". Based on this and this I went with the home uniform for 2011 being the same one that PBUE lists starting in 2012 and the away uniform started in 2010. The only real change in the home uniform was the font for the number and player name changed and they were made by Descente rather than Mizuno.
PBUE lists the uniform that I've identified as "Summer 2010-11" as only "Summer 2010" but I've seen ample evidence that it was worn in 2011 as well.
The Eagles had special uniforms for both the 2011 and 2012 Spring Camps. Oddly enough I could only find one card of a player who was definitely wearing one of those uniforms. It's hard to tell the difference between the 2011 Spring Camp Away uniform and the regular Away uniform so maybe there's a couple guys in the 2011 BBM 1st Version set wearing the Spring Camp uniform but I couldn't tell for sure. PBUE does not list the 2012 Spring Camp uniforms.