Are Dark Tide Relics shipwreck coins authentic?

Every shipwreck coin and artifact sold by Dark Tide Relics is authenticated and accompanied by provenance documentation from recognized authorities such as the Mel Fisher Maritime Heritage Society, NGC, or PCGS, plus a permanent digital provenance record via TreasureCheck.ai.

Which shipwrecks does Dark Tide Relics specialize in?

Dark Tide Relics curates artifacts from the Nuestra Señora de Atocha (1622), Santa Margarita, the 1715 Spanish Treasure Fleet, El Cazador (1784), SS Central America (1857), Maravillas, Concepción, and other documented Spanish colonial and American Gold Rush wrecks.

How are orders shipped?

All orders ship via FedEx, fully insured and with adult signature required on delivery.

Does Dark Tide Relics buy shipwreck coins from collectors?

Yes. Dark Tide Relics actively acquires authenticated shipwreck coins and collections. Submissions can be made through the Sell Coins program at darktiderelics.com/sell-coins.

Real Ingenio de la Moneda de Segovia

City: Segovia, Spain
Mint mark: Aqueduct symbol (or S)
Years active: 1455–1869
Metals: Silver, Gold, Copper
Assayers: — Various (pre-Ingenio medieval assayers); I Various (early Ingenio assayers); BR Various (later Habsburg assayers); F Bourbon-era assayers (Philip V onward)

Home of the Real Ingenio — the water-powered roller mill begun by Philip II in 1583 that made Segovia the most technologically advanced mint in Europe.

History

Segovia's minting history stretches back to May 1455, when Henry IV of Castile opened the "Old Mint" inside the walled city — the first coins to carry the city's Roman aqueduct as a mintmark. That hammer-struck operation kept working until about 1681 and was formally decommissioned in 1730. Segovia's greater significance dates to 1583, when Philip II founded the Real Ingenio de la Moneda — the "Royal Mint Engine" — on the banks of the Eresma River, to plans by Juan de Herrera. German (Tyrolean) machinery arrived in June 1585, trial pieces followed within weeks, and regular production began in March 1586. The Real Ingenio used water-driven roller mills to produce round, uniformly struck coins decades before any other Spanish mint adopted the technology. The Real Ingenio's coins were technological marvels: silver reales and gold escudos struck with machine precision while the rest of the Spanish empire — including Potosí, Mexico City, and Lima — was still producing hand-struck cobs. The mint identified itself with a stylized image of Segovia's Roman aqueduct as its mintmark, alongside (and later replaced by) a plain "S." For nearly two centuries Segovia's milled coinage existed alongside the cob output of the colonial mints, a parallel monetary universe of mechanical precision. The Real Ingenio also struck large-denomination silver "50 reales" pieces — the famous cincuentines — which are among the most prized of all Spanish coins. Segovia's peninsular mint operated until 1869, when Spanish minting was consolidated to Madrid. The Real Ingenio building itself survives today as a museum of monetary technology — the oldest industrial building in Spain.

Notable features

Tyrolean-engineered water-powered roller mills installed under Philip II
Aqueduct mintmark referencing Segovia's Roman aqueduct
Produced milled coinage while colonial mints still struck cobs
Real Ingenio building survives as the oldest industrial building in Spain

Coin types

Silver
Silver
Silver
Gold
Silver

Monarch periods

Henry IV of Castile — Opens the Segovia mint in May 1455; hand-struck coinage with the aqueduct mintmark.
Ferdinand & Isabella — Segovia continues as a Castilian royal mint and is named among the seven mints of the 1497 Pragmática.
Philip II — Founds the Real Ingenio in 1583; German roller-mill machinery arrives 1585 and regular production begins in 1586 — Spain's first mechanized mint.
Philip III & Philip IV — Peak of cincuentin production. Real Ingenio produces some of the finest coinage in Europe.
Charles II — Continued milled output under the last Habsburg.
Philip V onward — Bourbon milled pillar and bust coinage. Mint operates until 1869 consolidation to Madrid.