Are these vases waterproof?

Tin-glazed earthenware is a porous ceramic material that can absorb moisture over extended periods. Most collectors use these historic vessels for display rather than holding water for fresh flowers. Protective liners can sometimes be fitted inside if modern use is desired, though care must be taken to protect the historic glaze and interior body from damage.

How do I date a delft vase?

Dating relies on stylistic shifts, changes in glaze composition, and recorded factory marks where available. Seventeenth and eighteenth-century pieces often display looser brushwork and specific tin-glaze characteristics. Later nineteenth-century and twentieth-century examples frequently show different potting techniques and brighter, more uniform pigment application. Comparing foot rims and body weight helps establish the period.

Why are some vases converted to lamps?

Many ceramics from earlier centuries were adapted for domestic lighting during the twentieth century to suit changing interior tastes. This conversion often involved drilling a small hole for wiring or mounting hardware to the top. While collectors sometimes prefer untouched vessels, these lamp conversions represent a distinct chapter in the domestic history of the pieces.

What is the difference between delft and faience?

Delft specifically refers to tin-glazed earthenware produced in the Netherlands, particularly associated with the city of Delft. Faience is a broader term used for tin-glazed pottery made across Europe. French or other continental factories produced faience that often mirrored Dutch styles, creating parallel traditions in blue and white or manganese decoration.