On Wikipedia https://en.wikipedia.org/wiki/Belgrade_Philharmonic_Orchestra
Creation 1923
City Belgrade, Serbia
Country Serbia
Links Allmusic

Unlike most European countries and cities, Serbia and Belgrade were rather late in receiving a fine orchestra. Thus the Belgrade Philharmonic Orchestra was founded in 1923. Its founder, first director and chief conductor was Stevan Hristić, one of the most important Serbian composers and conductors. The inauguration concert of the Belgrade Philharmonic Orchestra took place on April 28, 1923 under the baton of maestro Hristić. wikipedia