Original Travel Laboratory Box, c. 1870

The box, measuring 45.5 x 35.5 x 14.5 cm, requires a table of at least 86 x 31 cm in size in order to work with it. When unfolded and stabilized with the strut, the lower, metal-lined compartment for developing opens up in front of you. There is a metal drainage opening on the right at the front. The compartment contains 2 papier-mâché bowls (for fixing and watering) and a porcelain bowl on a removable wooden frame for ease of movement (although it is very heavy, it is chemically neutral for the sensitive development process). The 3 shallow bowls, which are certainly original, are exactly the right height to be transported in the closed drawer. The box is designed to be both transported and set up vertically. In the compartments, which are stabilized with 2 safety locks, there is a darkroom lamp in the middle, 4 large original bottles, 6 smaller original bottles and 3 bottles that were probably added at the time (all bottles only with original glass stoppers, no screw mounts). There is also space for powdered chemicals and small accessories, including a stirring rod and a small preparation beaker. Also includes a plate-drying rack and 2 large chemical bottles from the period, labeled "Collodion" and "Aqua dest.". – Excellent exhibition material from the collodion era.

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)