Precious metals and their alloys and goods in precious metals or coated therewith, not included in other classes; jewellery, precious stones; horological and chronometric instruments; watch straps; accessories for clocks and watches, not included in other classes; boxes for watches and clocks, not included in other classes; parts of watches and clocks; watch bands and straps, cases for clocks and watches, and clock and watch accessories of leather; watch bands and straps, cases for clocks and watches, and clock and watch accessories of imitation leather