Archaeologists say they’ve found what is believed to be the oldest non-royal gold leaf-coated mummy inside a sarcophagus that hasn’t been opened for at least 4,300 years, according to reports released Thursday.

The mummy is believed to be a non-royal man named Hekashepes, and his body was covered in gold leaf when it was placed inside the ancient sarcophagus, according to the BBC. The body was found down a 50-foot shaft in the Saqqara burial site near the Egyptian city of Cairo.

“The sarcophagus was about 45 tons and the lid was about 5 tons,” director of the excavation team, Dr. Zahi Hawass, told CBS News. He said it took more than two hours for archaeologists to open the tomb, where they discovered the incredible gold lead-coated mummy.

“Of course, he was important. For someone to make a sarcophagus like this, 15 meters under the ground, he should be a very important man,” Hawass noted, according to the outlet.