It depends on which 103 Series. I believe the blue 103 series (Keihin Tohoku Special Set) are the hardest ones to collect because they are rare and blue is highly overrated. All 3 train formations are rare and exclusive to this set. The bid wars are always tough on used and new 103 Series.
![[Image: 607105873.jpg]](https://i.postimg.cc/1nQcLQb1/607105873.jpg)
There are many 103 Series found here, this is the link of all the 3 formations set. http://www2u.biglobe.ne.jp/~akeda/DOLL/set11.htm
There are many 103 Series found here, this is the link of all the 3 formations set. http://www2u.biglobe.ne.jp/~akeda/DOLL/set11.htm
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