"Happy Birthday Allies:" Marathon Navigator Automatic Anthracite U.S. 250 Watch Review

Having a Canadian military supplier design a tactical pilot watch to celebrate America’s 250th birthday shows that sometimes outsiders build the most authentic tribute pieces. Ariel Adams goes hands-on with the Marathon US 250 Anthracite Navigator (aka U.S. 250 Limited-Edition Anthracite SSNAV-D Auto), built to mark the 250th anniversary of the United States in 2026. This limited edition comes from a brand with deep government contracting legitimacy, having supplied official timepieces to the US military since World War II. Ariel breaks down a couple of massive design milestones for Marathon, including the modern brand's first-ever exhibition display caseback. The rear sapphire window features a printed American flag motif, showing off a specially modified and black anthracite-coated Sellita SW200 automatic movement. The review covers the signature asymmetric steel case layout originally engineered in 1986 for pilots at Kelly Air Force Base, detailing how the distinct right-side crown guards wear on the wrist. Ariel also explores the historical details integrated into the dial, including a custom 1776 plaque ringed by 13 stars and a unique red tritium gas tube at 12 o'clock that nods to the national anthem's "rockets' red glare." Finally, he tests the bi-directional 12-hour GMT bezel, handles the heavily textured black bison leather strap honoring the national mammal, and evaluates the collector appeal of its thematic $1,776 price point. Read our full technical evaluation a