3 Microscopes and 1 Spectroscope

1) Unmarked microscope, presumably France, c. 1880, green-and-gold-painted cast-metal square base with pair of tubular pillars, double mirror, substage pinhole disc, reflected-light magnifier, rack-and-pinion adjustment, height 10 1/5 in. – 2) Unmarked microscope, c. 1895, English base, double mirror, round stage, coarse and fine adjustment, height 11 ? in. – 3) American microscope, c. 1920, marked "Spencer Microscope ALOE Co. Sales Agents No 72262" on the base, below the mechanical table are the Abbe condenser, the iris diaphragm and a mirror, the tube with triple objective revolver is moved via a rack and pinion, fine focusing is achieved via a micrometer screw, height 13 in. – And: 4) Spectroscope by Schmidt & Haensch, c. 1900, signed: "Franz Schmidt & Haensch, Berlin", no. 5299, original lacquered and blackened brass, length 22 in., on heavy iron tripod. – In addition: 2 small microscopes and 2 magnifiers.

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)