The first known reference to these glasses known as "biquinhos" (spikes) is from a catalog 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, the design began to be created using the press method, which lasts until today. Handcrafted of glass Approx. 4.33"Dia. x 2.8"T Capacity, 9.25 oz. Item Weight (Lbs.): 5.5 Dishwasher and microwave safe Set of four Made in Portugal
