Science, Technology, Space Exploration & Meteorites

Impressive analog music synthesizer prototype named 'The Processor,' one of two examples designed and built circa 1975 by electrical enginee...

Rare circa 1860s Caton lineman's pocket telegraph set, as used by spies during the Civil War. Measuring just 5˝ x 2.25˝ x 1.25

Highly desirable circa 1860s Civil War–era 'camelback' telegraph key by G. M. Phelps, handsomely crafted from brass with hairpin sprin...

Very early circa 1860s Civil War–era telegraph set, mounted on a wooden 8˝ x 5˝ base, faintly marked: "Hamilton Electrical Wo

Hard-to-find circa 1860s Tillotson lineman's pocket telegraph set, as used by spies during the Civil War. Measuring just 5˝ x 2.25˝ x

Cold War–era Czech MRP-4 radar locator, codenamed 'Barbara,' designed for the direction finding of mobile radar and radio stations. Th...

Circa 1958 Cold War–era clandestine RT-3 electromechanical burst encoder, developed by Wandel & Goltermann for the German Federal Intellig...

Cold War–era Russian body-worn radio direction finder and intercept receiver known as 'FILIN,' developed around 1970 as a covert means...

Cold War–era R-354 spy radio set, codenamed 'Shmel ,' used by spies and special forces of the USSR for reconnaissance purposes. Th

Cold War–era Soviet R-014D electronic burst encoder, codenamed 'Datchik,' as used in conflict areas to transmit battlefield commands. ...