A chrome Smith astral Royal Naval ships clock for watch keeping, large outer ring minutes and small inner ring hours. With Slow/Fast switch. Number 25 and 30 have been painted in again due to wear from winding. With key. Normally these clocks are a 7 day movement, this one is unusually a 
14 day movement. In working order.  Measures 19.5cm glass diameter and 10cm deep.