Roman numerals, the numeric system used in ancient Rome, employs combinations of letters from the Latin alphabet to signify values. The Roman numeral system is a cousin of Etruscan numerals. Use of Roman numerals continued after the decline of the Roman Empire. From the 14th century on, Roman numerals began to be replaced in most contexts by more convenient Hindu-Arabic numerals.
A belle époque opal, enamel and diamond fob watch, by Tiffany & Co., circa 1905. The circular dial with Roman numerals to a gold and green enamel bezel, the reverse decorated with polychrome floral enamel detailing, overlaid by rose-cut diamonds and an oval cabochon opal, to a spectacle-set old brilliant-cut diamond chain
Cartier ~ Circa 1920 Art Deco diamond set lady's turtle wristwatch Paris: the tortoise shaped silvered dial with black Roman numerals, rose diamond set bezel and winder, the shaped rectangular shoulders pierced and millegrain set with rose diamonds, mounted in platinum, the case back in gold.
Art Deco sapphire and diamond lady's wristwatch by Cartier, Paris c.1925 , the cream rectangular dial with black Roman numerals, diamond set bezel with rectangular cut sapphires to either side, three sapphires of marquise and pear shape forming a triangle at the shoulders.
A lady's gem-set and enamel wristwatch, circa 1925. The dial with blue Roman numerals, the bezel set with well matched sapphires of Royal blue colour and very good clarity, the outer border set with pink rubies, some with scratched table facets, sapphires also with some suface scratching and emeralds, two with large chips.