Biunial Magic Lantern, c. 1880

W.C. Hughes, London. Decorative, well-preserved mahogany housing with brass fittings, height 64 cm, length 48 cm, width 26 cm, for framed lantern pictures with a height of approx. 11.8 cm, two identical brass-bound lenses with Petzval type 4/15 cm drive settings, last rear element of the upper lens cracked (this has no significant effect on the images), all elements accessible for cleaning, with additional metal plate device that can be cranked up directly on the condenser and enables one or the other lens to be lit depending on the height, with both condensers, newly wired electric lighting for 2 modern halogen bulbs 24 V 150 W placed next to each other, four brass wings on the sides for ventilation, all 4 wooden covers inset with blue glass, the dark-blue velvet shade curtain on the reverse attached to the original brass eyelets. – Fully functional device, perfect for any serious collection or exhibition!

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)