A covered mug painted curdled glass probably from Bohemia produced for the Portuguese market polychrome decoration with the coat of arms of Portugal and the inscription VIVAT. IOANNES. V. 18th C. (1st half) broken and glued Dimensões (altura x comprimento x largura) - 21,5 cm Notes: We would like to thank Doctor José Pedro Barosa, researcher and author on the subject of the history of glass, for this identification, having published, in particular, "Fabrico do Vidro e Vidreiros em Portugal  (1438-1714)" and "Da Alemanha para Portugal: 500 Anos de Continuidade no Vidro". Currently retired from professional activities, he is a collaborator at Vicarte, a research unit (on glass and ceramics) at the Faculty of Science and Technology of the Nova University of Lisbon. Vd. identical copies in CUSTÓDIO, Jorge - "A Real Fábrica de Vidros de Coina [1719-1749] e o vidro em Portugal nos séculos XVII e XVIII". Lisbon: Ministry of Culture / IPPAR, 2002, p. 161, figs. 79 and 80; MENDES, José Amado - "História do Vidro e do Cristal em Portugal". Lisbon: Edições INAPA, 2002, p. 57, fig. 38; and "Roteiro da Colecção do Museu Nacional de Soares dos Reis, Porto". Lisbon: Portuguese Institute of Museums, 2001, p. 147, nº inv. 360, where in the three sources they are identified as probably from the Coina Factory.