An intact chicken egg dating back 1,000 years has been discovered by Israeli archaeologists at a site in Yavne. Whole chicken eggs are rare and this one was cracked during its extraction.  Experts say poultry farming was introduced in Israel 2,300 years ago, during the Hellenistic and Early Roman periods.

https://www.jns.org/intact-1000-year-old-chicken-egg-unearthed-in-central-israel/