Books on Self-Playing Pianos and Hand-Playing Instruments

1) "Autogramme berühmter Meister der Tonkunst", M. Welte & Söhne, reprint 1975, Mignon-Musikverlag. – 2) "Faszination Klavier – 300 Jahre Pianofortebau in Deutschland", Konstantin Restle, Prestel Verlag 2000, 240 pages. – 3) "Welte Gästebuch von 1849–1928", Werner Baus, Kassel 2006, 294 pages. – 4) "Pianoforte-Mechaniken-Fabrik H.F. Flemming", original catalog 1896. – 5) "The London Duo-Art Pianists", Patrick Handscombe, Player Piano Group 2014, 124 pages. – 6) "The Welte-Mignon: Its Music and Musicians", Charles David Smith and Richard James Howe, Vestal Press 1994, 976 pages. – 7) "Duo-Art Piano Music", The Aeolian Co., New York 1927, original catalog, spine damaged, 480 pages. – 8) "Aus Freiburg in die Welt – 100 Jahre Welte-Mignon", Augustiner Museum Freiburg 2005, 186 pages. – 9) "Ampico – A Catalogue of Music", The American Piano Company, original catalog from 1923. – 10) "Steinway & Sons, eine Familiengeschichte um Macht und Musik", Richard K. Liebermann, Kindler 1996, 576 pages. – 11) "Piano Serving, Tuning & Rebuilding", Arthur A. Reblitz, Vestal Press 1978, 176 pages. – 12) "Inventing Entertainment – The Player Piano and the Origins of an American Music Industry", Brian Dolan, USA 2009, 2206 pages. – 13) "Idealist", Choralion Co., Berlin, original catalog 1917, 65 and 88 note rolls, very rare. – 14) "Welte-Mignon Klavierrollen", Gerhard Dangel and Hans-W. Schmitz, self-published 2006, 538 pages. – 15) "88er Künstler Notenrollen" P. Zacharias, Leipzig, original catalog 1923, 100 pages. – And: 16) 15 other books.

布雷克拍品等级是为了方便竞买人判断拍卖品的成色而设置的。布雷克等级用1到6级来标注外观和功能的成色，(从非常好到非常差)。 在目录图册里用括号里的2个数字来表示，前一个数字表示外观成色的级别，后一个数字表示功能成色的级别。如(3/2)表示外观成色是3(满意的)，功能成色2(好)。 成色 定义参照下列标准： 1 - 非常好 (未使用过，没有使用痕迹) 2 - 好 (新，极少的使用痕迹) 3 - 满意的 (普通的使用痕迹) 4 - 及格的 (明显的使用痕迹，某个非主要部件是后配的) 5 - 有缺陷的 (极明显的使用痕迹, 某个主要部件是后配的，功能上有缺陷，需要修理) 6 - 非常差 (严重破损, 缺少重要部件)