From Fortis, one of the deeply rooted manufacturers in Swiss watchmaking, this is a very special vintage model reflecting the iconic and timeless "Tank" (rectangular/square) case design line of the 1970s. Featuring a captivating black marble/veined patterned dial, gold-toned baton hands, and applied indices, it stands as a characterful vintage classic that offers both timeless dress watch elegance and significant collectible value. ​Technical Specifications ​Brand / Model: Fortis Vintage Tank / Dress Watch ​Movement: Powered by an original Swiss-made, 17-jewel (17 Jewels), manual-wind movement. The "Seventeen 17 Jewels Swiss" engraving and the mechanical movement layout are displayed in full detail in image ​Case Dimensions: Approximately 30 mm including the winding crown (approximately 28 mm excluding the crown / vertical lug-to-lug stance approximately 32-34 mm). Thanks to its classic tank case architecture, it offers a very refined, elegant, and retro presence on the wrist The side profile thickness can be inspected in image ​Case & Crown Structure: Features a gold-plated solid tank case design It retains its knurled gold-toned winding crown . Due to its age and regular wear, hairline scratches and areas of plating wear/flaking are present on the case ​Caseback: Original stainless steel snap-on caseback structure. The outer surface features the Fortis emblem alongside the "Swiss Made - Stainless Steel Back" inscriptions while the inner caseback is stamped with "FORTIS SWISS" ​Dial and Hands: An original custom-design dial set against a black background resembling natural marble textured The dial features a gold Fortis logo, minimalist baton indices, and matching gold hands. It bears the "SWISS MADE" signature at the bottom ​Condition & Accessories Details ​Operational Status: The 17-jewel manual-wind movement winds smoothly, operating fluidly and keeping reliable time ​Strap & Buckle: To complement the black marble concept of the dial, the watch comes fitted with a black leather strap featuring a crocodile/alligator pattern, paired with a silver/steel buckle ​Please Note: This watch beautifully preserves its period authenticity, rare marble dial texture, and retro tank character. Details such as age-appropriate hairline scratches on the case and areas of plating wear/flaking Due to its vintage/antique nature, no water resistance warranty is provided. For cross-border or international shipments, any potential customs duties, taxes, or additional clearance fees are entirely the responsibility of the buyer. Please review all macro photos carefully before finalizing your purchase.