The artefacts, which were sent to the museum at the end of June, came with a letter saying that they were discovered in the Westmeath area using a metal detector. The sender wished for the Museum to conserve the axeheads, but did not include any contact details or further specifics.

“The axeheads were thoughtfully packed in foam cut-outs and cardboard, ensuring their safe arrival,” the museum said in a statement.

“Our experts at the NMI have identified these items as flat axeheads from the Early Bronze Age, a significant archaeological find that offers a glimpse into Ireland’s distant past.”

According to the National Museum of Ireland website, the “unregulated and inappropriate use of detection devices” is subject to “severe penalties” under the National Monuments Acts 1930 to 2014, because it “causes serious damage to Ireland’s archaeological heritage.” This includes using a metal detector without explicit written permission from the Minister for Culture and Heritage – currently, Minister Catherine Martin.

Breaking this law can result in a fine of up to €63,486, and/or up to 3 months imprisonment.