The Rolex Day-Date ref. 18038 from 1986 is an elegant 36 mm President crafted entirely in 18k yellow gold and powered by the automatic Rolex calibre 3055. What makes this particular example especially distinctive is its black onyx hard-stone dial, characterized by a deep, glossy surface and beautifully minimalist appearance that contrasts strongly with the warm yellow gold. Natural stone dials were produced in significantly smaller quantities than conventional Day-Date dials, making original onyx examples particularly uncommon and desirable among collectors. The simplicity of the dial allows the natural stone and precious-metal construction to take center stage, giving the watch a timeless and unmistakably luxurious character. This example is further accompanied by a Rolex Certified Pre-Owned box and papers, completing the presentation of this distinctive vintage Day-Date.