Chalice on square base; with the inscription: Citadelle d'Anvers 15 Avril 1831; Thick; square; smooth base with the text: 'Citadelle d'Anvers 15 Avril 1831'. Faceted stem with a disk. Spherical cup; in which four oval and one square medallion are cut; in which engraved: 'Souvenir. / W. E. V. B '; Antwerp; Citadel of Antwerp (19th century); Jan Carel Josephus van Speijk; Val Saint Lambert (attributed to); Nederlanden; c. 1825 - c. 1830 and/or 1831; glass; glassblowing; h 8.3 cm x d 6.3 cm