Calculating Machines and Calculating Aids

1) Bergmann Universal Calculator, 1917 onwards, twenty-second edition, Continentale Büro-Reform Jean Bergmann, Berlin, multiplication and division table in book-form, number slider Correntator in the back, with folding cover plate for switching from addition to subtraction. - 2) Calculimetre G. Charpentier, c. 1900, France, calculating disc, nickel-plated, with rotating brass ring, Ø 2 1/5 in. - 3) Ken+Add, c. 1950, USA, small adding machine for dollars and cents, with pen in metal case. - 4) Addometer model F, c. 1940, Reliable Typewriter & Adding Machines Co, Chicago, disc adder for British currency, 8 discs, pull erase, engraved "Taylor's 74th Chancery Lane, London", in case. - 5) Hexadat, c. 1970, Addiator Rechenmaschinenfabrik C. Kübler, Berlin/Wolfach, number slider, 8 x 8 digits, for computer applications in the hexadecimal system, with table in case. - 6) Disc adder, c. 1918, Michel Baum, Munich, 7 digits, with separate erasing device for results and control display, width 12 in. - 7) The Standard Desk Calculator, c. 1910, Herbert North Morse, Trenton, New Jersey, disc adder, 8-digit plus erasing wheel, serial no. 45325. - 8) Disc adder, c. 1930, Josef Funke, Munich, 3 x 3 1/5 in. - 9) Himala calculating toy, c. 1930, disc adder by Josef Funke. - And: 10) 2 demonstration models.

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)