KGB Experimental Model "4x Needle Eye Lens Camera" c. 1960/70

USSR. No. 13, for a negative format of 8 x 8 mm on an 8 x 41 mm wide film strip with four release buttons for four individual B shutters, interior with space for four special lenses of 7.8 mm diameter by at least 13 mm long, camera front with empty frame for four removable lenses/glasses/mirrors of 2.3 mm diameter and 2 mm thickness, the underside with latter approx. 0.2 mm thin replaceable metal foil with four rudimentary holes of approx. 0.3 mm (unsuitable for pinhole chamber images of even the simplest design). – Literature: H.K. Melton, "The Secret History of KGB Spy Cameras: 1945–1995", p. 69 for an apparently identical device; Jean Loup Princelle, "The Authentic Guide to Russian and Soviet Cameras", second edition, p. 197. – Note: The original plan of using four adjacent needle-eye (pinhole) lenses was presumably abandoned due to the high production cost of the optics at the time (can be completed later depending on the variety of such lenses currently available on the world market). This may also explain the use of the empty removable frame, in which small mirrors could be mounted for camouflage purposes.

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)