GUB Q1 no. 12248 ship′s chronometer, GDR according to enclosed watchmaker-receipt 1974 delivered to the testing laboratory in Stralsund, cardanic suspended brass case, screwed screwed down, bevelled-glazed two- piece construction wooden box, silvered dial with Roman numerals, 56-hour power reserve indicator at 12, constant second at 6, original hands, polished brass movement with fausses c?tes decoration, stainless steel bracelet & fusee, Earnshaw spring detent escapement, movement-, case & dial signed & numbered, measures approx. 18,5 x 18,5 x 18,5 cm, condition 2-3