The Speyer wine bottle (or "Römerwein") is a sealed vessel, presumed to contain liquid wine, and so named because it was unearthed from a Roman tomb found near Speyer, Germany. It is considered the world's oldest known bottle of wine.It's still full of liquid:
You can see the high quality of the glass bottle. Roman glass was highly prized by other civilizations and was widely exported as a luxury good. Roman glass is found regularly in China.
But it's cool to see the actual liquid wine from ca. 325 AD.