3 Microscopes and 2 Sets of Preparations

1) Jug-handle microscope, Emil Busch, Rathenow, Germany, no. 22147, c. 1910, brass and iron, draw tube, milled head screw adjustments, double mirror, condenser, iris diaphragm, 3 signed oculars, 1 signed objective, height 12 1/4 in. – 2) Microscope, unmarked, c. 1918, brass and iron, draw tube, graduated in cm, coarse and fine adjustment, quadruple nosepiece, circular stage, height-adjustable condenser and double mirror, tilting stand, height 13 ¾ in. – 3) Compound monocular microscope, c. 1900, marked "W. Watson & Sons, 313 High Holborn, London", original lacquered brass, coarse and fine adjustment, circular stage, condenser, double mirror, tilting stand, height: 13 3/4 in. – 4) 2 specimen boxes marked "Ceesem", with approx. 100 slides each, for teaching anatomy with human specimens. – And: 5) Polarisation apparatus, c. 1900, in case, consisting of polariser (Nicol prism) and analyser with measuring scale, by C. Reichert, Vienna.

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)