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極希少!デテント脱進機!スイス製銀鍵巻き懐中時計18金部品クロノメーター
Price
298000円
(Tax included)
RM298000
Specifications
Quantity
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Seller Rating
100% Good(8) Normal(0) Bad(0)
Condition
Some damage or stains
Shipping
Free shipping to Japan
Listed Time
2026-02-23 22:58:54
Updated Time
2026-05-24 17:56:24

極希少!デテント脱進機!スイス製銀鍵巻き懐中時計18金部品クロノメーター

OH済み!全巻振り角約355度!(デテントなので振り切りなし。1/8倍速動画https://youtube.com/shorts/X7llz4jg05Y?si=pI-L2iIsXXIpwyg4)

珠玉の超希少脱進機、ピボットデテント脱進機です!

所謂クロノメーター脱進機と呼ばれるデテント。慣性と温度補正機能を持たせるためRG(18K?)製のチラネジを備えた大径のバイメタル切りテンプに直接動力を伝え、摩擦を減らすことで注油を必要とせず、高耐久、高トルク、高振り角、超高精度の全てを実現!

デテントは大別するとスプリング(1790年発明)とピボット(改良型)の2通りがあり、特に後者はデテントの軸(ピボット)に繊細なゼンマイを巻き付けて動かす複雑で効率的な方式。

しかし、ピボットデテント方式はその繊細さ故に生産、加工、調整の全てがほかの脱進機と比べ圧倒的に難しい。

が、その代償として得た絶大な精度は実用日差+2秒!(現代のクロノメーター規格は日差±2秒)

また、スワンネック緩急(1867年発明)は当時のデテントに限らず鍵巻き時計全般に中々見られない超レアな緩急針です

リューズ巻き時代〜現代ではそうでもないかもしれませんが、当時からすれば超最新。

さらに搭載する至極色のブレゲヒゲゼンマイには超特殊曲線、ヒゲ上部0.7周オーバーコイルを採用!

また、6枚目の写真からも分かるように、美しい細身ローマンインデックスの施されたポーセリンダイヤルの3時、9時位置にはダイヤルフィキシングスクリューが覗いているクロノメーターの中でも特殊な仕様の文字盤。

ちなみに他の採用された例で有名なのは7枚目1964年製東京5輪用ラトラパンテストップウォッチ。敢えて文字盤にすらネジを使うこの執念は文字盤の僅かなズレさえも精度に影響するとして、完全に固定するためのモノ

振動数は2.5Hz。ですがデテントは天輪が往復して初めて一回ガンギ車が動くので秒針が運針するのは0.4秒毎です

ムーブメントには真鍮色のスペーサーが巻かれていて、ケースとの密着度を高めています

フルハンターケースは酸化の黒さ等から銀かニッケルと推測しています。

青焼き(紫寄り)バタフライ針仕様

リューズは銀色であることからも分かるように蓋の開閉専用です

ケース径52mmリューズ含まず
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Notes:

  • The billing weight will be based on whichever is greater: the actual weight or the volumetric weight.
  • Volumetric weight (kg) = Length (cm) x Width (cm) x Height (cm) / 5000
  • Common oversized and heavy items include: furniture, fishing rods, automotive parts, etc.
  • Consolidating 2 or more items will incur a "consolidation handling fee" (see price list for details)
    

Platform Transaction Rules:

1. Order cancellations and returns are not accepted for any reason. Please review the item description and seller ratings before purchase.
2. Each mercari item is shipped individually. Orders from the same seller will be processed separately, resulting in multiple handling fees and local Japanese shipping charges. Combined shipping is not available.
3. As mercari does not have a negotiation system, we cannot provide price negotiation services.
4. We cannot assist with purchases for items marked as "Buyer Specified," "Bundle Deals," "Requires Buyer's Agreement (Not Buy It Now)," or "Partial Shipping of Order."
5. Buyers cannot demand specific shipping methods from sellers. Shipping will be as per the seller's offered options.
6. Requests for early shipping, post-purchase price reductions, or transaction cancellations after purchase cannot be accommodated.
7. Once items arrive at our Japanese receiving point, buyer feedback must be provided and payment released to the seller. Feedback cannot be modified, and negative or no feedback is not permitted.
8. Refusal of items is not allowed after they arrive at our Japanese receiving point.

mercari Proxy Purchasing Guidelines

1. After the first payment is completed, the order will be processed within the system-displayed timeframe.
2. Items on the website may sell out at any time. Completing the first payment does not guarantee successful purchase of the item.
3. Once our Japanese receiving point confirms receipt of the item, our staff will immediately provide feedback to the seller and release the payment.
4. We cannot provide negative feedback or withhold feedback to sellers based on member requests.
5. If the seller uses a shipping method without tracking (e.g.,【普通定形外邮件】、【メール便】 etc.), we cannot provide compensation for lost items.
6. We cannot communicate with or inquire to sellers regarding issues with ongoing transactions, items in transit, or problems with items received at our collection point (errors, damage, discrepancies, etc.).
7. This website is not covered by our standard guarantees. Please consider carefully before making a purchase.

1. International Shipping

Air freight: If the arrival notice exceeds seven days and the status of the goods is not confirmed, a customer complaint will occur and the seller will not be able to report it.

2. local delivery

After receiving and inspecting the goods, if you have any questions, please contact Alfred 24 customer service staff within 48 hours after receipt, and let Alfred 24 make a decision. letao will try its best to provide relevant information to assist members in processing. The following are reminders:

1. You can leave a message through "Customer Service Message" and provide local express delivery in Order number and have the following information ready:
● Product outer box/unboxing photos
● Photos of damaged goods

2. Alfred24’s liability for any shipment, including but not limited to loss or damage, is limited to actual direct losses and shall not exceed the upper limit of HK$500 per shipment; if it is sent to a Post Smart Mail station or post office The maximum compensation limit for each shipment is HKD 320.

The following are product types that are not eligible for compensation by Alfred 24:
▲ The shipment is flammable or explosive, or is easily moldy, rotten and/or discolored, etc.
▲The shipment is fragile
▲The shipment is a liquid product
▲The recipient’s address is incorrect or invalid
▲The recipient’s contact number is invalid or the text message cannot be received
▲Any unpredictable or force majeure factors
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