Photo of the HydroConquest model, not necessarily of this reference. Photo : I khushi, CC BY-SA 3.0, Wikimedia Commons

Longines L3.781.4.56.6

Name: Longines HydroConquest 41 (noire) L3.781.4.56.6
Brand: Longines
SKU: L3.781.4.56.6

HydroConquest 41 (noire)

Median observed for this reference

€983

Typical range: €983 – €983

How this valuation is calculated

Median of 1 asking price recorded for the exact L3.781.4.56.6 (sources: watchrecon); half lie between €983 – €983.

That is -40% below the retail price (€1,650 in 2025).

Your value also depends on year, condition, box and papers: the valuation takes them into account.

Specifications

Référence ou prix à confirmer : valeur prudente issue de la connaissance éditoriale.

The price of a Longines HydroConquest spotted in a listing, compared with its value.

Answers based on our pages and observations, with sources. Indicative: neither a buy-back offer nor an authentication.