{"product_id":"birthday-watch-april-1963-seiko-5-sportsmatic-cal-410-waterproof-daini-gold-filled-21j-automatic-oh","title":"Birthday Watch April 1963! Seiko 5 Sportsmatic Cal 410 \"Waterproof\" DAINI Gold Filled 21J Automatic (OH)","description":"\u003cp\u003e\u003cstrong\u003eA BIRTHDAY WATCH IS A WATCH PRODUCED THE SAME MONTH AND YEAR AS YOUR BIRTH MONTH AND YEAR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMake: Seiko\u003cbr\u003eType: Automatic\u003cbr\u003eModel: Seiko 5 Sportsmatic Gold-Filled\u003cbr\u003eYear of Production: April 1963\u003cbr\u003eMovement: 410\u003cbr\u003eBPH: 18,000\u003cbr\u003eNumber of Jewels: 21\u003cbr\u003eHand and Dial: 3D Gold-Filled Baton Indices with Dauphine Hands\u003cbr\u003eWidth: 36.0mm\u003cbr\u003eLug to Lug Height: 43.1mm\u003cbr\u003eThickness: 12.5mm\u003cbr\u003eLug Width: 18mm\u003cbr\u003eStrap: Brand New Hi-Quality Rally Designed Genuine Blue Leather Strap with Seiko Signed Gold Buckle\u003cbr\u003ePouch \/ Box: Brand-New EVA Type Zipper Pouch\u003c\/p\u003e\n\u003cp\u003eAccording to most legitimate online information available, the Seiko 410 movement with day and date made its debut at the end of 1963 and lasted until 1970 when it was superseded by the 6619 movement.\u003c\/p\u003e\n\u003cp\u003eThis movement was used in almost all Sportsmatic and in some Seikomatic models. The Sportsmatic was introduced to supersede the Gyro Marvel as the entry sports model.\u003c\/p\u003e\n\u003cp\u003eFor Seiko Collectors and Vintage fans, this is a highly sort-after pre-SUWA (logo) Seiko Seikosha with Applied Dial (AD) in near mint condition.\u003c\/p\u003e\n\u003cp\u003eA deep cleaning was conducted to reveal an immaculately preserved reflective Silver Sunburst Dial that creates a stunning sunburst effect, gold-filled 3D baton indices, date \/ day window, hands and reflective chapter ring.\u003c\/p\u003e\n\u003cp\u003eThe timeless cylindrical shaped gold-filled case also underwent a deep cleaning and was buffed as best as possible; however, there are some hairline scratches still present. The acrylic glass was polished and is in pristine condition albeit miniscule scratch marks may be present.\u003c\/p\u003e\n\u003cp\u003eThe crown is located at the traditional 4H position and is nicely tucked away to prevent damage or snags yet it is easily accessible. The date and time quickset works as it should by uncorking the crown to the first level and second level for respective adjustment. The day quickset is via turning the hands forwards and backwards past midnight.\u003c\/p\u003e\n\u003cp\u003eThe movement was carefully stripped and meticulously cleaned, oiled, re-assembled and calibrated on 23 July 2026; hence, it underwent an overhaul and not a general servicing. It should be able to operate unhindered until the next servicing thereby providing the owner peace of mind.\u003c\/p\u003e\n\u003cp\u003eEquipped with the well revered 410 movement, it has 21 Jewels that operate at 18,000 BPH. The time-grapher shows excellent readings of -1 seconds and amplitude of 222 with a relatively straight centered line! Such readings are truly exceptional even by brand new modern automatic watch standards whereby the accepted tolerance is -20 to +40 seconds a day! This is a testament to the quality, the meticulous care provided over the years, and of course the painstaking calibration conducted.\u003c\/p\u003e\n\u003cp\u003eThe case width and height are approximately 36.0mm (w\/o crown) and 43.1mm respectively. The lug width is 18mm, and the strap can accommodate wrists up to 20cm; hence, the watch size is suitable for men and the modern women.\u003c\/p\u003e\n\u003cp\u003eThe watch comes with a brand-new hi-quality Rally Designed Genuine Blue Leather Strap with Seiko Signed Gold Buckle as part of the deal.\u003c\/p\u003e\n\u003cp\u003eTo the best of our knowledge and expertise when overhauling the timepiece, the watch is 100% original Seiko components from this particular watch. No parts were replaced with aftermarket parts or modified.\u003c\/p\u003e\n\u003cp\u003eDue to its age, this timepiece has not been water-resistant tested.\u003c\/p\u003e\n\u003cp\u003eThe pictures provided shows the watch in pristine condition (no dents and major scratches), and the movement within squeaky clean and well maintained. It has also been demagnetised to improve parts reliability, minimise wear + tear, and improve accuracy. The only drawback is the lack of documentation and original box. A nice purposeful carrying case or box will be provided instead.\u003c\/p\u003e\n\u003cp\u003eSeldom can one find a vintage watch that offers this and more. Yes, there are many other same \/ similar models in the market, but none are as well-kept and maintained as what you see here, and with an attractive price to boot. So, it is a no-brainer that this one-of-a-kind watch will make an extremely beautiful birthday present for that special someone born in April 1963!\u003c\/p\u003e\n\u003cp\u003eBear in mind that this watch has seen many of the previous owners’ ups and downs in life and should be cherished and well taken care of for the next generation to savour such engineering beauty.\u003c\/p\u003e\n\u003cp\u003eThis is a truly stunning April 1963 Seiko 5 Sportsmatic SUWA in near mint condition with a beautifully preserved vintage dial, immaculate indices, hands, movement, case and brand new leaather strap; so, be unique and own an April 1963 Birthday Watch that is almost impossible to source in such fine condition or purchase it for that special someone instead.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Altimate Group","offers":[{"title":"Default Title","offer_id":44258706686041,"sku":null,"price":588.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0279\/7590\/9465\/files\/IMG20260730180423.jpg?v=1785450203","url":"https:\/\/shop.altimate.sg\/products\/birthday-watch-april-1963-seiko-5-sportsmatic-cal-410-waterproof-daini-gold-filled-21j-automatic-oh","provider":"Altimate Group","version":"1.0","type":"link"}