Dark Blue Saffiano Leather Watch Strap - Gold & Silver Hardware - 18 & 20mm Strap I believe the case is

I believe the case is brass but I'm not 100% sure

featuring the clean instrument-like styling that makes old mechanical stopwatches so appealing

keeping the focus on its art deco inspired sculptural form

creating a unique appearance that gives the watch its vintage charm

As with most vintage promotional pieces

Dark Blue Saffiano Leather Watch Strap - Gold & Silver Hardware - 18 & 20mm Strap I believe the case isElevate your timepiece with this luxurious saffiano leather watch strap, designed for both style and convenience. Available in two classic sizes (18mm and 20mm), and your choice of elegant gold or sleek silver hardware, this strap is the perfect accessory to complement any watch. Crafted with premium saffiano leather, it provides durability while maintaining a sophisticated textured look. The quick release spring bar ensures hassle free changes,