Nuestra Señora de la Luz

The final voyage

Nuestra Señora de la Luz had lain at anchor off Montevideo for roughly three months, awaiting passengers and specie shipped overland from Potosí and Chile before continuing to Cádiz. With her captain ashore, a sudden southeasterly gale (a sudestada) struck the roadstead; the officer left in command weighed anchor rather than risk grounding, and the ship was lost in the river that night, close enough to shore that contemporary accounts describe roughly a tenth of Montevideo's population as having perished [1](https://bhl.org.uy/index.php/%C2%BFEl_Preciado_o_Nuestra_Se%C3%B1ora_de_la_Luz%3F).

The loss was investigated at the time; historian Juan Alejandro Apolant later reconstructed the sinking, its manifests, and 18th-century salvage attempts from Spanish colonial records in his 1968 study, which remains the principal documentary source [2](https://legacy.sedwickcoins.com/ta32/Luz_article.pdf). Much of the treasure aboard was contraband, undeclared to colonial customs, which is why its full extent was never officially tallied.

What was aboard

A partial cargo record survives in Spanish colonial correspondence and was reconstructed by historian Juan Alejandro Apolant; a full, itemized manifest matching everything recovered has not been published, and undeclared contraband specie was by nature unrecorded.

Gold ingots: Unmarked or privately marked gold bars, without royal tax stamps, recovered from the wreck site and studied for their owners' ciphers.

Silver and gold coin: Cob coinage struck at Potosí and other colonial mints, recovered in large quantity from the cargo area.

Hides and colonial produce: Ordinary Río de la Plata export goods documented as part of the ship's declared cargo.

Personal effects: Everyday shipboard items recovered alongside the specie, consistent with a merchant vessel's crew and passengers.

How to collect

Confirm Uruguayan export authority: Legitimate material should carry documentation of government-sanctioned recovery and export, not a private diver's word alone.

Look for cipher marks, not fineness stamps: The Luz's gold ingots are notable specifically for lacking standard royal tax marks; sellers claiming '100% documented' fineness stamps on Luz gold should be questioned.

Distinguish this wreck from 'El Preciado': The ship's identity was disputed even among Uruguayan researchers in the 1990s; confirm which name and source a given lot's attribution rests on.

Separate valuation hype from documented count: Widely repeated press figures for the treasure's total value are estimates, not appraisals of a fixed, audited inventory.