US Navy Short Wave Receiver with Audion Control Box and Further

1) Short Wave Radio Receiver Type SE 143, dated 1917, Sperry Gyroscope Company, New York, quartz receiver, battery-operated buzzer for setting the crystal, for external detector, switch for setting audion or crystal, wave range from 250 to 3100 meters, manufactured for the Navy Department Bureau of Steam Engineering. - 2) Audion Control Box Type SE1071, dated 1918, Western Electric Company Inc., New York; detector unit for radio receivers like model IP-500/SE-143, manufactured for the Navy Department Bureau of Steam Engineering, using the VT-1 tube. - 3) Crystal detector, type SE 184-A, Löwenstein Radio Company, New York. - 4) R.F. Driver, type SE 1387, dated 1922, National Electric Supply Company, range from 125 to 30,000 meters. - 5) Audiometer, type 164, c. 1922, General Radio Company. - 6) Coupler for honeycomb coils, type LC-100, c. 1919, DeForest Radio Telephone & Telegraph Co., New York, with 3 additional plug-in coils. - And: 7) Reference book: "Robinson's Manual of Radio Telegraphy and Telephony", USA 1919, 308 pages, 144 illustrations.

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)