Longines HydroConquest piece auction prices
As of 7 November 2026, hammerhistory.com has recorded 24 auction sales of the Longines HydroConquest piece with a published hammer price, closed between 20 November 2021 and 6 November 2026, on 18 auction sites in 7 countries. The middle half of the sales fetched EUR 400 to EUR 800, with a median of about EUR 600 (rounded, in euros, before the buyer's premium). One sale is free to read: a Longines HydroConquest piece sold for CHF 500 on 20 November 2021. 11 are at auction now.
All sales 24
| Sold | Built | Hours | Auction house | Place | Photos | Hammer price |
|---|---|---|---|---|---|---|
| 2021-11-20 Armbanduhr "Longines Hydro Conquest" |
unknown | unknown | auktionshaus-zofingen.ch | Zofingen, CH | 1 | EUR 547CHF 500 FREE |
| 2026-11-06 ARMBANDSUR, Longines Hydro Conquest, Automatic. |
unknown | unknown | Auction house | SE | 8 | in the report |
| 2026-11-03 ARMBANDSUR, LONGINES HYDRO CONQUEST. |
unknown | unknown | Auction house | SE | 6 | in the report |
| 2026-10-31 LONGINES, Hydro Conquest (30 bar/300 meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-10-21 LONGINES HYDROCONQUEST |
unknown | unknown | Auction house | IT | 1 | in the report |
| 2026-09-19 RELOJ LONGINES HYDROCONQUEST EN ACERO INOXIDABLE REF. L3.782.4 |
unknown | unknown | Auction house | MX | 2 | in the report |
| 2026-09-19 LONGINES, HydroConquest (30bar/300meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-09-05 LONGINES, Hydro Conquest (30 bar (300 meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-09-05 LONGINES, Hydro Conquest (300m/1000ft) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-08-08 LONGINES, HydroConquest (30bar (300meters) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-07-22 LONGINES, Montre Hydro Conquest Chronographe |
unknown | unknown | Auction house | FR | 3 | in the report |
| 2026-07-04 LONGINES, HydroConquest (300m/1000ft) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-07-04 LONGINES, Hydro Conquest (30 bar/300meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-06-02 LONGINES, Montre Hydro Conquest à lunette rouge |
unknown | unknown | Auction house | FR | 4 | in the report |
| 2026-05-02 LONGINES, Hydro Conquest (30bar/300meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-03-28 LONGINES, HydroConquest (30bar/300meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-02-28 LONGINES, Hydro Conquest (300 m/1000 ft) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-02-23 A Longines Hydro Conquest gent's bi-metal automatic wristwatch, ref. |
unknown | unknown | Auction house | GB | 6 | in the report |
| 2026-02-23 A Longines Hydro Conquest gent's bi-metal automatic wristwatch, ref. |
unknown | unknown | Auction house | GB | 6 | in the report |
| 2026-02-03 A gent's Longines Hydro Conquest steel cased |
unknown | unknown | Auction house | GB | 1 | in the report |
| 2026-01-31 LONGINES, Hydro Conquest (30bar/300meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2026-01-03 LONGINES, Hydro Conquest (30bar/300m) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2025-12-06 LONGINES, HydroConquest (30bar/300meter) |
unknown | unknown | Auction house | SE | 1 | in the report |
| 2023-12-02 Longines longines hydroconquest L38434 |
unknown | unknown | Auction house | DE | 1 | in the report |
At auction now 11
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Questions about Longines HydroConquest auction prices
What does a Longines HydroConquest sell for at auction?
In the 24 auction sales we recorded, the middle half fetched EUR 400 to EUR 800, with a median of about EUR 600. These are rounded hammer prices in euros, before the buyer's premium and VAT; what one machine fetches depends on its year, hours and condition, which the table shows next to each sale.
How many Longines HydroConquest auction sales are on record?
24 sales with a published hammer price, closed between 20 November 2021 and 6 November 2026, on 18 auction sites in 7 countries. 12 more closed without a sale.
Is a Longines HydroConquest at auction now?
11 pieces of this model are at auction now; they are listed on this page with their current bid and when they close.
Are the Longines HydroConquest hammer prices free to read?
The oldest sale of every model is free to read, and so is every hammer price under the site's floor. The other 23 hammer prices of the Longines HydroConquest open with an account: every sale of the model for a year, or one sale on its own.
How often does a Longines HydroConquest find a buyer at auction?
On the auction sites that publish the lots that failed to sell, 17 of 22 Longines HydroConquest lots offered found a buyer: 77%. For jewellery, watches and silver as a whole it is 80%. Withdrawn lots are not counted.
Hammer prices are what the auction house recorded when the lot closed, before the buyer's premium, in the currency of the sale. A sale listed on a house's own site and on its platform counts once. Doubt a figure? Open the sale and its listing is linked there. How prices are recorded.