Ca. 100-400 AD.A nice spherical blue glass flask with very attractive iridescence, a folded rim, long tubular neck and a globular body with a concave base. Intact. Glass was a major manufacturing industry in the Roman Empire, especially after the invention of glassblowing in the middle of the first century BC, when glass became used for a variety of purposes including vessels, jewellery and construction materials such as glass or tiles. Roman glassmaking reached the farthest corners of the Empire and flourished until about 400 AD, when the Roman Empire started to disintegrate, finally falling in the late 5th century AD.Size: L:150mm / W:100mm ; 135gProvenance: Ex collection PR, southern Germany, approx. 1970 - mid 1990s.