Welsh researchers solve 400-year-old combination lock recovered from Ann Francis’ shipwreck

Welsh researchers used CT scanning technology to unlock a 400-year-old combination lock recovered from the Ann Francis shipwreck off the coast of Wales. The lock's combination was identified as ANCE. The hoard includes 870 gold and silver coins and is displayed at the National Waterfront Museum in Swansea.

Welsh researchers from Amgueddfa Cymru – Museum Wales and Cardiff University have successfully unlocked a 16th-century combination lock recovered from the Ann Francis shipwreck using CT scanning technology. The Ann Francis sank in December 1583 after being blown off course while returning from Spain to Norfolk, wrecking on Margam Beach near Port Talbot in South West Wales. The lock, part of a treasure hoard of some 870 gold and silver coins and personal belongings, was discovered by metal detectorist Peter Hughes over 21 years between 1996 and 2017. The hoard is on public display at the National Waterfront Museum in Swansea. The CT scan revealed the internal mechanism, identifying the combination as ANCE. The lock may have secured a small chest holding valuable items such as coins or documents that did not survive. The exhibit, Tides of Treasure, runs until September 2027.