Seiko quartz chronograph, calibre 8T63, reference 8T63-00D0, running – dark brown-grey sunray dial with rose-gold-coloured markers and hands, rose-gold-coloured tachymeter bezel, 30-minute, 24-hour and small-seconds registers, date at 4.30, 10 bar, stainless steel case on its Seiko steel bracelet. PLEASE NOTE: no box or papers are included. The watch was received described as the Japanese catalogue model SBTR026 of Seiko's Selection range, and the case reference 8T63-00D0 engraved on the caseback is the case used by that range, but the name Selection does not appear on the watch – the dial reads SEIKO and CHRONOGRAPH only – and without papers the catalogue number has not been confirmed, so the watch is listed under its case reference. The bezel is rose-gold-coloured: it is a plated finish over steel, not solid gold, and the case itself is plain stainless steel; the plating shows no wear through in the photographs. The clasp cover, the caseback and the undersides of the lugs carry fine hairlines and light scratches from normal wear, as described under Condition below. A whitish residue sits in three of the six notches on the rim of the caseback; it has not been established whether this is lint, polishing compound or a deposit, and it has not been cleaned off. The serial number 4D5520 reads as December of a year ending in 4, so December 2024 or December 2014; the 8T63 chronographs of this range were introduced after 2014, which supports 2024, and the period entered in the listing fields follows this reading. The code printed at the foot of the dial is too small to read with certainty in the photographs and appears to differ from the case code 8T63-00D0: on Seiko watches the dial code identifies the dial and the case code identifies the case, so the two are not expected to match and the difference is not a sign of a replaced part. The caseback is marked MOVEMENT JAPAN and CASED IN CHINA. It is also marked WATER RESISTANT 10 BAR, but the gaskets have not been tested, so the water resistance is not guaranteed and the watch should be kept away from water. The crystal is not marked as sapphire anywhere, so no claim is made about its material. The chronograph hands sit correctly at zero, but the start, stop and reset functions have not been operated. The number of micro-adjustment holes in the clasp could not be seen in the photographs. The case diameter has been measured with a caliper at 40 mm. The lug width has not yet been measured and is given below as an approximation. Overview A Seiko quartz chronograph on the 8T63 calibre in stainless steel with a rose-gold-coloured bezel and matching dial furniture. The dial is a dark warm grey with a sunray finish – measured off the photographs at a hue of 14 to 30 degrees, a saturation of only 8 to 17 per cent and a brightness of 25 to 39 per cent, so a charcoal with a brown cast rather than a true black – with rose-gold-coloured applied bar markers, doubled at 12, rose-gold-coloured pencil hands with white luminous lines, and a white central chronograph seconds hand. The dial carries SEIKO and CHRONOGRAPH below 12 and three silver-ringed registers: a 30-minute counter at 9 with a white hand, a 24-hour indicator at 3 and the running seconds at 6, both with rose-gold-coloured hands. The date sits at the 4.30 position, black on white. The fixed rose-gold-coloured bezel carries a tachymeter scale in white from 60 to 400 above a black minute ring, and the crown and the two round pushers are polished steel. The polished case sides contrast with brushed lug tops, the screw-down caseback is engraved with the case code and the serial number, and the bracelet is Seiko's three-row steel bracelet with a push-button folding clasp engraved SEIKO. The watch was running when photographed, with the chronograph hands at zero. Specifications - Brand: Seiko - Model: Chronograph, received as Seiko Selection SBTR026 – see the note above - Reference number: 8T63-00D0, engraved on the caseback - Serial number: 4D5520, engraved on the caseback - Movement: quartz chronograph, Seiko calibre 8T63, with 30-minute counter, small seconds, 24-hour indicator, 1/5-second central chronograph hand and date - Date of manufacture: December 2024 per the serial number – see the note above - Case: stainless steel with polished sides and brushed lug tops, a fixed rose-gold-plated bezel printed with a tachymeter scale from 60 to 400 in white, a black inner minute ring, a grooved steel crown at 3 and two round polished steel pushers at 2 and 4. Screw-down caseback with six notches and a brushed finish, engraved SEIKO / 4D5520 / WATER RESISTANT 10 BAR / STAINLESS STEEL / MOVEMENT JAPAN / CASED IN CHINA / 8T63-00D0, with two small inspection marks. No sticker. The rose-gold colour is a plated finish on the bezel only, over steel; there is no precious metal and no hallmark. - Case diameter: 40 mm excluding the crown - Crystal: flat, with no scratches, chips or cracks found. The material is not marked anywhere – see the note above. - Dial: dark brown-grey with a sunray finish. Measured off the photographs with the white background in the same frame used to correct the white balance, the dial reads at a hue of 14 to 30 degrees, a saturation of 8 to 17 per cent and a brightness of 25 to 39 per cent across three sample points, so a warm charcoal grey. - Dial printing: SEIKO and CHRONOGRAPH below 12; MOV'T JAPAN and the dial code at the foot of the dial; a white printed minute track - Registers: 30-minute counter at 9 o'clock marked MIN. 30 with 15, 30, 45 and 60; 24-hour indicator at 3 o'clock marked 6, 12, 18 and 24; running seconds at 6 o'clock marked 20, 40 and 60, each with a silver ring - Markers: rose-gold-coloured applied bar markers, doubled at 12. No luminous material was found on the markers. - Hands: rose-gold-coloured pencil hour and minute hands with white luminous lines, a slim white central chronograph seconds hand, a white 30-minute hand and rose-gold-coloured hands in the 24-hour and seconds registers. Whether the luminous lines still glow has not been tested. - Date: window at the 4.30 position, white disc with black numerals. There is no day – this is a date-only model. - Bezel: fixed, rose-gold-plated, with a tachymeter scale in white - Water resistance: 10 bar per the caseback, but the gaskets have not been tested – see the note above - Bracelet: Seiko stainless steel bracelet, three-row design with brushed outer links, fitted end pieces and a push-button folding clasp with SEIKO on the cover. No other maker's name appears anywhere on it. The number of micro-adjustment holes has not been confirmed – see the note above. No spare links are included. - Lug width: approximately 20 mm, estimated from the photographs – to be confirmed by measurement - Wearable size: as linked the bracelet fits a wrist of approximately 175 to 180 mm, taken from the graduated cone in the photographs; the clasp's micro-adjustment allows a few millimetres either way. No spare links are included, so it cannot be lengthened beyond this. - Weight: 126.77 g - Included accessories: none Condition Very good, with minor signs of wear. - Dial: excellent. No stains, no crazing, no discolouration and no lifting of the markers were found under magnification, and the printing is sharp. - Markers: all present, firmly seated and free of corrosion. - Crystal: no scratches, chips or cracks were found. - Hands: all six straight and clean, with no corrosion. - Case and bezel: the rose-gold plating on the bezel is even, with no wear through to the base metal and the tachymeter printing complete; a wavy pattern seen on the bezel at 9 o'clock in one photograph is not present in the others and is read as a reflection. The polished case sides are clean. Light scratches on the brushed undersides of the lugs and the case edges. No dents and no distortion. - Caseback: fine hairlines over the brushed surface from normal wear. A whitish residue in three of the notches has not been identified – see the note above. The engraving is clear. - Crown and pushers: intact and correctly seated, with no chips or deformation. - Corrosion: no rust and no green corrosion were found anywhere on the watch. - Bracelet and clasp: no broken or missing links. Fine hairlines and light scratches on the clasp cover, and lighter marks on the links. A dull patch on the inside of the upper left lug appears in one photograph only. The clasp closes and latches correctly. Working order The watch is running. The small seconds hand at 6 o'clock was checked against the timestamps of four photographs spanning 17.2 seconds: it advanced by about 9, 5 and 3 seconds across intervals of 9.3, 4.7 and 3.2 seconds, so it is keeping time in one-second steps with no interruption. The central chronograph seconds hand sits at 12 and the 30-minute hand at 60 in every frame, and the 24-hour hand agrees with the time shown. The chronograph start, stop and reset functions, the date changeover, the timekeeping accuracy and the water resistance have not been tested with equipment, and the battery's remaining life is unknown; the battery is a consumable part and may need replacing at some point. Included Watch and bracelet only. No box, papers, warranty card, spare links or other accessories. Shipping Ships from Japan. Registered and insured shipping, mainly via DHL or FedEx. Import duties or taxes may apply depending on the buyer's country. These charges must be paid by the buyer. No weekend shipping as courier pickups are unavailable on Saturdays and Sundays. Please feel free to contact me with any questions before placing your bid.