How to recognise one
Six marks make the look. The count says whether the one homage keeps each one.
Red chronograph hand
A long red chronograph hand with a pointed tail runs over the cream dial.
Two registers at 9 and 3
Two cream registers with black hands sit at 9 and 3.
Boxed numerals at 12 and 6
Raised numerals sit in a frame at 12 and 6.
22 Zuan Zhongguo Tianjin text
Three lines of text under the centre name the movement's maker.
Crown and two pushers
A crown sits between two round pushers on the right of the case.
Polished case
A polished steel case with a thin bezel round a cream dial.
Each close-up covers about 12.5 mm of watch, using the listed case width and estimated photo edges.
The one homage
The only homage of the Seagull on Bewrist so far.
Merkur 3rd Anniversary Wuxing
about £74 $99, seen 2 Oct
Lowest price. The lowest price listed here.
Size not listed yet
Original specifications
Sizes and specifications apply to the version named below. Other versions can differ.
Historical Chinese Air Force military Project 304 / D304 original-production watch; exclude later 1963/Long Sky commercial reissues.
Original identity is the military Project 304/D304 watch described by Sea-Gull and collector-author Li Wei. The supplied D304 label names the original military design; commercial 1963/Long Sky reissues are separate candidates and their dimensions do not transfer. Knowcat’s readable full-text republication attributes 10.5 mm thickness to the historical 1966 production account, credits 文/图 程建明, and names the article indexed in 钟表 2016 issue 5. The claim does not state measurement method or crystal inclusion. A 2014 FengSung copy reproduces the same sentence and credits the magazine; because its displayed date predates the indexed issue, preserve the chronology ambiguity and do not count copies as corroboration.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 38 mm | 划破时代长空，穿越1963 | Sea-Gull One primary source. Source version Historical Chinese Air Force military Project 304 / D304 original-production watch; exclude later 1963/Long Sky commercial reissues.. Sea-Gull explicitly attributes the original D304 design a 38 mm size while distinguishing the modern 40 mm Long Sky case. Treat 38 mm as nominal historical case width; no original physical specimen or axis is stated. Sources differSea-Gull states 38 mm nominal original design size; a community forum account of the 1966 production batch states 36.8 mm diameter. Neither source defines its axis or measurement method. Keep Sea-Gull’s preferred nominal 38 mm selection and preserve 36.8 mm as an alternate, unverified historical claim. |
| Lug to lug | Not confirmed | Original military D304 dimensions remain absent from the readable historical sources. Reissue measurements are explicitly excluded. |
| Thickness | 10.5 mm | 国表奇葩 历史上的中国军用钟表 | 知猫 full-text reprint One cited source. Source version Historical Chinese Air Force military Project 304 / D304 original-production watch; exclude later 1963/Long Sky commercial reissues.. Selected as a qualified secondary historical publication claim: the readable Knowcat full-text reprint credits 文/图 程建明 and places 10.5 mm thickness in the 1966 original-production account. The 2016 issue index confirms the specialist-publication title/venue, while the same-sentence FengSung copy is lineage context, not independent corroboration. The source does not state a specimen, axis, method, or whether the crystal is included. Do not interpret as a known crystal-inclusive or crystal-exclusive case height. |
| Lug width | Not confirmed | Original military D304 dimensions remain absent from the readable historical sources. Reissue measurements are explicitly excluded. |
Sources and unconfirmed details
- Historical Project 304/D304 was a military-only 1960s watch. Modern Seagull 1963 reissue dimensions do not establish the original case dimensions.
- Historical Project 304/D304 was a military-only 1960s watch. Modern Seagull 1963 reissue dimensions do not establish the original case dimensions.
- Historical Project 304/D304 was a military-only 1960s watch. Modern Seagull 1963 reissue dimensions do not establish the original case dimensions.
- 1963 | Sea-Gull, read 2026-10-07T07:53:21Z
- 划破时代长空，穿越1963 | Sea-Gull, read 2026-10-07
- 天津原版D304计时码表 这故事一个接一个 编的未免太快了！ | 腕表之家社区, read 2026-10-07
- 国表奇葩 历史上的中国军用钟表 | 知猫 full-text reprint, read 2026-10-07
- 中国军用计时仪器的发展历程 | 风尚中国网, read 2026-10-07
- 钟表 2016年5期 | 参考网, read 2026-10-07
- 国表奇葩 历史上的中国军用钟表 | 参考网 / fx361, read 2026-10-07
Sea-Gull 1963 Long Sky Edition, official product code 819.17.D304Shown in the photograph
Exact current Long Sky Edition is identified on Sea-Gull product page as 819.17.D304. This current 40 mm Long Sky model is not the original 1963 historical D304 watch or the generic 38 mm 1963 reissue. Do not transfer dimensions between those cases.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 40 mm | 1963 Long Sky Edition 819.17.D304 | Sea-Gull official One primary source. Sea-Gull official Chinese page says the Long Sky case is approx. 40 mm. |
| Lug to lug | 46.2 mm | Seagull 1963 Series Original D304 Chronograph Watch Sky Voyage Edition 40mm | SEA-GULL official site One primary source. selected on the manufacturer’s exact current code; retailer gives approx. 46 mm, retained as a distinct measurement claim. The sources do not establish the 0.2 mm precision as agreement. |
| Thickness | 14.35 mm | 1963 Long Sky Edition 819.17.D304 | Sea-Gull official One primary source. Sea-Gull official Chinese page says case thickness is approx. 14.35 mm. |
| Lug width | 20 mm | Seagull 1963 Series Original D304 Chronograph Watch Sky Voyage Edition 40mm | SEA-GULL official siteSea-Gull 819.17.D304, China’s 1st aviation chronograph watch | Good-Stuffs Sources agree. Official exact-code page and a retailer page for W-81917D304 both give 20 mm strap/lug width. |
Sources and unconfirmed details
- No selected exact-candidate value yet; this field remains open for further source searches.
- No selected exact-candidate value yet; this field remains open for further source searches.
- 1963 Long Sky Edition 819.17.D304 | Sea-Gull official, read 2026-10-07T07:53:21Z
- Sea-Gull 819.17.D304 dimensions | Xbiao, read 2026-10-07
- Sea-Gull 1963 Long Sky Edition 819.17.D304 | Horology Planet, read 2026-10-07
- Sea-Gull 1963 Long Sky Edition 819.97.D304 | City Chain, read 2026-10-07
- Seagull 1963 Series Original D304 Chronograph Watch Sky Voyage Edition 40mm | SEA-GULL official site, read 2026-10-07T09:44:00Z
- Seagull D304 Original Replica manual chronograph | Seagull Watch Company, read 2026-10-07T09:44:00Z
- Sea-Gull 819.17.D304, China’s 1st aviation chronograph watch | Good-Stuffs, read 2026-10-07T09:44:00Z
Sea-Gull 1963 commercial 38 mm reissue comparator
Comparator for the supplied Seagull 1963 / D304 design alias. This is a modern 38 mm reissue, not an original 1963 military-issued specimen; 38 mm and 42 mm versions exist.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 38 mm | Seagull 1963 (Project-304) | Leonardo CasalettiSeagull 1963 D304 Air Force Chronograph Watch | Watch Junky Sources agree. Source version Sea-Gull 1963 commercial 38 mm reissue comparator. Two independent opened sources agree for the modern 38 mm reissue comparator. This value does not describe an original 1960s issued Project 304 specimen. |
| Lug to lug | 47 mm | www.seagull1963.com One cited source. Source version Sea-Gull 1963 commercial 38 mm reissue comparator. This commercial 38 mm reissue listing reports 47 mm lug-to-lug. It does not describe the historical military D304. |
| Thickness | 12.7 mm | www.seagull1963.com One cited source. Source version Sea-Gull 1963 commercial 38 mm reissue comparator. Product listing gives 12.70 mm thickness; the older 14 mm listing may describe a different version. Sources differThe 14 mm listing does not name the same exact 38 mm crystal/configuration. The exact commercial 38 mm product page supplies 12.7 mm.
|
| Lug width | 18 mm | Seagull 1963 (Project-304) | Leonardo CasalettiSeagull 1963 D304 Air Force Chronograph Watch | Watch Junky Sources agree. Source version Sea-Gull 1963 commercial 38 mm reissue comparator. Two independent opened sources agree for the modern 38 mm reissue comparator. This value does not describe an original 1960s issued Project 304 specimen. |
Sources and unconfirmed details
- Seagull 1963 (Project-304) | Leonardo Casaletti, read 2026-10-07T08:05:00Z
- Seagull 1963 D304 Air Force Chronograph Watch | Watch Junky, read 2026-10-07T08:05:00Z
- Review: Seagull 1963 Chronograph | WahaWatches, read 2026-10-07T08:05:00Z
- www.seagull1963.com, read 2026-10-07T10:02:00Z
More about the 1963
Lay a homage over the SeagullAny of the 1, laid over the original at one scale
Lay the Merkur 3rd Anniversary Wuxing over the Seagull
Slide to fade from one watch to the other and compare the case shapes. The figures below describe the version shown in the photograph.
40Seagull 1963
40 mm placeholderMerkur 3rd Anniversary WuxingWidth unknown for one or both watches. The 40 mm placeholder does not show their true relative size. Photo proportions stay unchanged. Perspective and lug length can differ.
Seagull 1963 photo: 819.17.D304. Merkur 3rd Anniversary Wuxing photo: Wuxing salmon dial, khaki canvas strap.
Sea-Gull 1963 Long Sky Edition, official product code 819.17.D304, specifications and sources
| Measure | Seagull | Merkur 3rd Anniversary Wuxing |
|---|---|---|
| Case width | 40 mm | Not listed yet |
| Lug to lug | 46.2 mm | Not listed yet |
| Thickness | 14.35 mm | Not listed yet |
| Lug width | 20 mm | Not listed yet |
| Movement | Not listed yet | Hand-winding mechanical |
| Power reserve | Not listed yet | Not listed yet |
| Water | Not listed yet | Not listed yet |
| Price | Not tracked here | about £74 $99, seen 2 Oct |
Side view
Thickness not listed yet
Copies
Not compared yet
Gives it away
No difference noted