For entries in the Golden Book of the City of Dortmund a Montblanc Meisterstück No. 146 in the classic version is used. The fountain pen has a 14-carat gold nib with platinum inlay in nib width B and is fitted without engravings or decorations. It has been in official use since the 1980s together with a matching pen stand; the writing instruments used previously also came from Montblanc. The Golden Book itself was designed in 1899 on the occasion of the opening of the port of Dortmund by Kaiser Wilhelm II by Professor Mayer of Heidelberg together with Karl Eyth and financed by Heinrich Wencker, owner of the Dortmund Brewery zur Kronenburg; the matching golden inkwell with little tower-corners was donated by the owner of the Dortmunder Zeitung Gustav Krueger and designed by Paul Drescher in silver, gilded, partly polished and adorned with gemstones. The book cover itself consists of engraved silver, is partly gilded and decorated with ruby-backed rock crystals, coal spheres and pieces of translucent and opaque enamel; between the covers, now in the fourth edition, lie hand-made paper pages. Before each entry the book is given to a graphic studio that calligraphically inscribes the name, function and background. The fountain pen is checked for ink level and cleanliness and placed without cap into the pen stand for the ceremony; the set is supplemented by a blotter roller. Should the 146 fail, a second Montblanc writing instrument stands ready as a backup. After the ceremony, pen and book are kept under the supervision of the protocol chief in the safe, while the book cover, together with inkwell, official chain and parts of the council silver, is exhibited in an alarm-secured display case in the city hall foyer.