A large area, high sensitivity hard X-Ray experiment, operating in the energy range 15 = 300 keV, has been succesfully flown twice (1986 and 1987) from the balloon launching facility of Trapani-Milo (Sicily). This balloon borne multitechnique telescope was designed and built within the framework of an international collaboration between the Istituto di Fisica Cosmica and the Istituto di Astrofisica Spaziale, C.N.R., Italy and the Department of Physics of the Southampton University, U.K. The telescope consists of two different arrays; scintillation detectors(NaI 5.5 mm thick actively shielded) with a total area of 2,700 cm 2, and Multiwire Proportional Counters (MWPC) with a total sensitive area of 900 cm2. The scintillation detectors provide a large sensitive area over the energy range 20 300 keV, with moderate energy resolution, while the proportional counters cover the range 15 4. 130 keV with good spectral resolution (8% at 120 keV). During the two flights several cosmic sources have been observed and detected. Preliminary results will be presented on the Crab, used as an in-flight calibration source, and on the extragalactic objects 3C273, NGC 4151 and MCG 8-11-11.