Dimensions:Mouth Diameter 10 cm (3.94 in),Height 9.5 cm (3.74 in),6?7th Century?Condition & Provenance:The cup survives fully intact without cracks or chips,the glaze presents lustrous overall quality covered by original white glaze with naturally variable thickness.Subtle earth specks and age?related wear marks formed over centuries appear across surface,mild natural glaze flaking can be spotted along partial rim.Exposed foot base bears genuine ancient earth staining.No modern polishing or re?glazing repair is done,original Sui?dynasty firing glaze condition and excavated old crust are well preserved.This piece originates from a private collection in Boston,USA.It came to North America in 1950s and was collected by a senior connoisseur focusing on Northern?Dynasty to Sui white porcelain.It was stored in climate?controlled dark storage room,never consigned for auction and has no public exhibition record.Description:This Sui?Dynasty white?glazed deep?bodied cup was produced in northern Chinese kilns during Sui period.The vessel features slightly flared rim,steep vertical wall tapering inward toward base supported by small neat ring foot with elegant upright silhouette.It is fully covered by soft even white glaze sitting atop fine solid ceramic body.Simple and powerful shape reflects high?level craftsmanship of Sui white porcelain.It stands as key physical artifact documenting early white?porcelain technical progression from initial development toward maturity,provides vital reference for studying northern kiln industry and Sui?Tang domestic porcelain form evolution,and holds great aesthetic appreciation and antique?ceramic collecting value.