Where are some coin collector/supplies shops in the Tokyo or Yokohama area?

Question:

I want to work on getting the 47 prefectures coin set complete and maybe some back coin set issues. Easy access from a train station would be Ideal.I have already been to the Japan mint/shop close to Otsuka station.

Answer:

I have no idea of "47 prefectures coin set".
But there are some coin dealers in Tokyo and Yokohama.
How about these shops in this list?
http://www.jnda.or.jp/com/member_dealers…

Ginza coins (銀座コイン), Shozando (賞山堂) and so on are located in Tokyo and close to the stations.

In addition, "Tokyo collection fair 2011"(TOKYOコレクションフェア2011) will be held in September 9-10 at Tokyo Kotsu Kaikan(東京交通会館).