K-20 Aircraft Camera with Tessar, c. 1941

Fairchild Aviation, New York. No. 41-1260, early version from the first series, die-cast body, for 133 mm (5 ? inch) rollfilm, 4 x 5 inch format, still with Kodak Tessar Ic 4.5/163 mm no. MF 4443, stop-down to f/22, shutter speed 1/125 to 1/500, working, fixed magazine with ring-shaped zone on the film pressure plate, above which is a pot that automatically creates a vacuum before the shutter release to ensure the film is flat for a short time; working. The lever on the right side advances the film; the shutter release is ergonomically integrated into it. Folding viewfinder with crosshairs, yellow filter, weight 4.4 kg, with original case and 3 cartridges of Kodak Super XX Aerographic (1960), Kodak Plus-X Aerecon (1970) and Plus-X Aerographic 2402 (1976), dimensions 23 x 23 x 28 cm. – Note: This exact camera type became famous through the image of the mushroom cloud over Hiroshima. Due to its reliability, it was used well after the Korean War.

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)