De Rupel glassworks started production in 1925 in Boom, a small village between Brussels and Antwerp in Belgium. The increasing success of the Val-St-Lambert factory was encouraging, and orders for hand-blown and semi-automatic-made beer glasses were enough to keep the small factory busy. They were the producers of the distinctive and iconic Duvel beer-glass.
In 1935 the company hired Paul Heller (1914-1995) as chief designer, and briefed him to produce decorative glassware. Heller's family came from Bohemia, and Paul, like his father, was working for the VGN factory in Manage (later VNM), south of Brussels.
In 1936 they recruited more workers from Bohemia and began production of their well-known 'black' vases which were hand painted with floral (or architectural) motifs.

