A detail of the gold mask of King Tutankhamun shows where the beard has been reattached with epoxy. Source: AP

The mask of King Tutankhamun before the hasty repair job. Source: AP

Restoration specialist Christian Eckmann said the beard, which has been detached before from the mask and had likely loosened over the years, was accidentally knocked off last August during work on the relic’s lighting in the Egyptian Museum.

The cause of a scratch discovered on the mask had yet to be ­determined.

“There will be a committee of experts consisting of conservators, archeologists and natural ­scientists in order to develop a plan for re-conservation,” he said.

“Up till now we found one scratch which is visible but it cannot be said now whether this scratch is an ancient one, a recent one, or a modern one which just happened right now.”

On Wednesday, museum conservators said the beard had been hastily glued back on with epoxy, a powerful adhesive extremely difficult to remove.

The 3300-year old mask ­remains on display, with epoxy filling a small gap between the chin and what is known as a “model beard” commonly worn by kings and gods.

Museum administrators ­declined to comment on which specific type of epoxy was used. Experts say adhesives used in such repairs are chosen for their reversibility, for which epoxy is not renowned, although the difficulty of its removal varies according to the type of resin used.

Antiquities Minister Mamdouh el-Damaty said he was alerted to the incident only two days ago.

The burial mask, discovered by British archeologists in 1922, sparked worldwide interest in ­archeology and ancient Egypt when it was unearthed along with Tutankhamun’s nearly intact tomb. It is arguably the best-known piece in the museum, one of the city’s main tourist sites, which was built in 1902 and has seen little change since.

AP