Archaeologists in Egypt have unearthed more than 100 delicately painted wooden coffins, some with mummies inside, and 40 funeral statues in the ancient burial ground of Saqqara, the Egyptian antiquities authorities said, calling the discovery the largest find at the site this year.

The sealed, wooden coffins, some containing mummies, date as far back as 2,500 years and are “in perfect condition of preservation,” Khaled el-Enany, the Egyptian minister of tourism and antiquities, told reporters in Saqqara on Saturday. The fine quality of the coffins meant that they were probably the final resting places for the wealthiest citizens, officials said.

Other artifacts discovered include funeral masks, canopic jars and amulets.

“This discovery is very important because it proves that Saqqara was the main burial of the 26th Dynasty,” Zahi Hawass, an Egyptologist, told the magazine Egypt Today, referring to the rulers from about the mid 600s B.C. to 525 B.C. It would also enrich existing knowledge about mummifications in that period, he added.

The artifacts and coffins will eventually be exhibited at several museums in Egypt, including the Grand Egyptian Museum, a sprawling archaeological center under construction near the Giza Pyramids that is expected to open next year.