I just joined to post on this thread. I bought my Sekai 1000 Sprint in 1978 and still have it. It sat in my sister's shed for about three decades and in my garage for the last three years. I would like to restore it as faithfully as I can. I already have road and mountain bikes so this one will be for going to the grocery store and library. As far as I can tell the parts are all there but the headset and a few other components appear really rusted. The frame color is deep blue and needs touch up.

Serial no. is Y78-0202306

Any advice or general tips welcome.