Mae'r cwcis hyn yn gwbl angenrheidiol ar gyfer weithrediad y wefan.
Rydym yn defnyddio Google Analytics i fesur sut ydych yn defnyddio'r wefan er mwyn i ni ei wella yn seiliedig ar angen defnyddwyr.
Gall y cwcis hyn gael eu gosod gan wefannau trydydd parti a gwneud pethau fel mesur sut rydych yn gwylio fideos YouTube.
Amgueddfa Cymru
volume 2 (of 2) of official catalogue of swiss watch repair parts; for lever movements; loose-leaf paper in navy blue plastic ring binder, with gold coloured inscription on front in French, then in smaller print in English, Spanish and German; text in same 4 languages; fully illustrated, including shadow charts; arranged according to manufacturer; includes supplement dated 1953; pieces of blue card at front and back; one at front explains use of ring binder; 165 pp; inserted loose are 2 supplements, dated 1954-1958 and 1959