Also known as Ramses the Great, he was the third pharaoh of Egypt's Nineteenth Dynasty and ruled from 1,279 to 1,213 BC.
The size of the statue reaches nearly 7 meters when combined with its lower part, which was unearthed decades ago.
Located on the west bank of the Nile River, the city of El Ashmunein was known as Khemnu in ancient Egypt and was the regional capital of Hermopolis Magna during the Greco-Roman period.
Mustafa Waziri, head of Egypt's Supreme Council of Antiquities, said the work confirmed that the upper part of the statue matches the lower part discovered by German archaeologist Gunther Roeder in 1930.
The mission has begun cleaning and preparing the block before modeling how the statue will look when the two sections are joined, Veziri said.
