I had the watch overhauled last month. The exterior condition is good for its age. Model number: 2118-3210, manufactured February 1968 (?) Original S crown and buckle. The original buckle has some slight rust. Running smoothly, within ±1 minute. Functions are also working fine, including calendar advance (by moving it back and forth around midnight) and manual winding. The strap is a new, unused Bear brand. Strap width: 14mm Will be shipped via Nekopos with bubble wrap.