RARE Belgian Val St Lambert Lalaing Mustard Jar with Cover. This Mustard Jar and Cover are in Excellent Condition with no chips or cracks. The Mustard stands 7 1/2" tall with cover in place. Lalaing was originally produced in the Belgian Val Saint Lambert, but has been produced at Holmegaard Glassworks for a short period of time. The two glassworks enter into the first import agreement in 1871 on 34 glass services, which is renegotiated several times and greatly reduced. However, Lalaing remains an import glass service product until World War I, where Holmegaard obtains a license to produce the glass and continues with this until 1934. Production continues in Belgium until the 1960s. The glass is mouth blown crystal glass with a nice hollow air stem. It is cut with wide facets that run throughout the height of the glass, from foot to cover. The glass thereby gets a matching hexagonal foot. See pictures for complete condition and description.