"Nella mostra 'Formes Idées d'Italie,'" Domus, no. 329, April 1957, p. 25 for similar examples Alberto Bassi and Serena Maffioletti, ed., Paolo De Poli: artigiano, imprenditore, designer, Padua, 2017, p. 228
circa 1956 Enameled copper. 3 3/4 x 6 x 4 in. (9.5 x 15.2 x 10.2 cm) Reverse signed De Poli and with paper label printed SMALTI/DE POLI/35139 PADOVA/VIA S.PIETRO, 43/ITALIA and MASCHERA in pen.