Vintage Riversa G.I. Swiss Watch 17 Jewels Selca Movement Incabloc Needs service

This vintage Riversa G.I. watch is a rare Swiss timepiece from the mid-20th century, featuring a Selca 17-jewel manual wind movement with Incabloc shock protection for durability. The off-white dial has Arabic numerals, dauphine hands, and sub-seconds at 6 o'clock, marked "Riversa G.I. 17 Jewels." Stainless steel case with screw-back engraved "Water Resistant Incabloc Stainless Steel Back Antimagnetic." Paired with an original Speidel stainless steel expansion bracelet showing patina. Suitable for unisex wear. Sort of works—winds and runs intermittently but needs servicing for reliable performance (accuracy not tested). Vintage condition with scratches, oxidation, and dial patina disclosed. Emphasizes classic military-style design and historical appeal for collectors. Ideal for restoration or display. No box or papers.