Vintage Chrono-Sport Chronograph 17 Jewels M5 289. The case is stainless steel and measures 37mm in diameter. The dial is black featuring applied lume numeral hour markers. The caseback is stamped "STAINLESS STEEL BACK ANTIMACNETIC M5 289". The inner caseback is stamped "ARLIN TRPHY CO INC FRANCE". The movement is stamped "ARLEN TROPHY CO INC FRANCE 188". Condition: (Good).