Omega Seamaster Memomatic automatic watch

Omega Seamaster Memomatic with alarm function in rare gold-plated case. The case has traces of age and wear, especially on the back. The case back has a faint engraving and the crown is original. The leather strap is new. The service history is not known, but the watch and its functions work well, and the deviation in the watch's running is about 10 seconds per day.