The Rolex Air-King 5500 with the distinctive BANOCO logo dial and commemorative 5-year service case-back engraving, crafted in 1987, holds a significant place in the realm of horology, blending precision engineering with corporate heritage. Bearing the logo of the Bahrain National Oil Company (BANOCO), this timepiece embodies a rich history rooted in Bahrain's petroleum industry. Established in 1976, BANOCO symbolizes the government's strategic decision to assert control over Bahrain's petroleum sector, marking a pivotal moment in the nation's economic development. By 1981, BANOCO assumed full responsibility for offshore oil exploration, production, and refining operations, further solidifying its role as a key player in the global energy landscape. The inclusion of the BANOCO logo on the dial pays homage to the company's legacy and its contribution to Bahrain's prosperity, while the engraved case-back commemorates the dedicated service of individuals within the organization. As a testament to both horological excellence and corporate pride, this Rolex Air-King serves as a timeless symbol of achievement and partnership in the realm of luxury timepieces.