Roman glass unguentarium Unguentaria were amongst the most common objects of Roman blown glass: produced in large numbers, they were items of everyday use for keeping expensive unguents and cosmetic oils. By the 1st century AD, the technique of glass-blowing had revolutionised the art of glass-making. The new technique allowed craftsmen to use smaller amounts of glass for each vessel and obtain much thinner walls, so enabling the creation of small medicine, incense, and perfume containers in new forms. The small body and mouth allowed the user carefully to pour and control the amount of liquid dispensed, and glass was the material of choice for storing the oils because it was not porous. These small glass bottles are found frequently at Hellenistic and Roman sites, especially in cemeteries, and the perfumes which filled them would have been gathered from all corners of the expansive Roman Empire. Provenance: Purchased by the current owner to an English gallery. Former private collection (London; 1990s). The Supplier warrants that he obtained this lot legally. Provenance statement seen by Catawiki. Important information. The seller guarantees that he is entitled to ship this lot. The seller will take care that any necessary permits will be arranged. The seller will inform the buyer about this if this takes more than a few days. Important: For destinations out of Spanish territory: all our objects will be shipped after obtaining CERTIFICATE OF EXPORTATION by Ministry of Culture of Spain. We inform our clients that it may take between 4-8 weeks.