Collection of Portable Telephones

1) Two by L.M. Ericsson, St. Petersburg, Russia, c. 1916, field telephones in wood cases. – 2) L.M. Ericsson, Stockholm, c. 1940, small field telephone for wearing around the neck, in linen bag. – 3) Two of Oscar Wallin patent, Stockholm, c. 1920, house telephones converted to field telephones, handsets with speaking horns, bells, dry batteries, in wood case. – 4) L.M. Ericsson, Stockholm, c. 1918, field telephone with crank-inductor, in leather case. – 5) Unmarked, c. 1918, field telephone with crank-inductor, in leather case. – 6) L.M. Ericsson, Stockholm, 1922, field telephone in wood case, with circuit diagram on brass plate. – 7) L.M. Ericsson, Stockholm, c. 1940, diver's telephone, model DPB 9011, in wood case, circuit diagram in lid. – 8) L.M. Ericsson, Stockholm, function unknown, design similar to the diver's telephone, in wood case. – 9) L.M. Ericsson, field telephone, c. 1940, bakelite receiver, dial, in wood case. – 10) Test telephone, c. 1965, Tele-Werkstäderna, Sweden, with dial and counters, in wood case. – And: 11) L.M. Ericsson, field telephone, c. 1925, in oak case.

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)