Since Howie Cohen's passing, no items are for sale.
This is an advertisement for Dianippon and DnB brand bicycles that appeared in the 1952 edition of the Japan Bicycle Guide on page 219. Dianippon also produced bicycles under the Danube brand. See the picture gallery.
Picture Gallery for this Item (click images to enlarge)
This advert appears on page 213 of the 1952 issue of the Japan Bicycle Guide. The company had adverts on two different pages of the same book (magazine).