A Butterfield type sundial silver engraved decoration, black Roman and Arabic numerals for four latitude scales, with indication on the back of the latitudes of 18 cities French 18th C. (1st quarter) non-original needle, wcase marked BUTTERFIELD A PARIS, marked silver, without Portuguese marks, pursuant to Decreto-Lei No. 120/2017, of September 15 - art. 2nd, no. 2, paragraph c) Dimensões (altura x comprimento x largura) - 6 x 5,5 cm; Peso - 21 g.