The first known reference to these glasses known as "biquinhos" (spikes) is from a catalogue of the Nova Fábrica de Vidros Marinha Grande (New Marinha Grande Glass Factory) - Ivima, 1901. This type of glass, set in the universe of diamond-tip manufacturing, was produced in the nineteenth century, through manual cutting techniques.
Later these began to be produced by the press method, which lasts until today.
1000ml. 31cm High.
Made in Portugal