C. 1970 Vintage Rolex Cellini Women's 22mm Manual Watch with Black Leather in 18kt Yellow Gold. Size 7.5

18KT: Karat (abbreviated kt or K) is a unit that indicates the purity of gold in the metal. 18kt is 75% gold. In Europe, 18K yellow gold is most favored and used in jewelry.

YELLOW GOLD: Gold is a precious metal with a natural yellow color. It is quite soft and often alloyed with other metals to increase its strength. The purity of the metal is indicated by a unit called a "karat," with 24kt having the highest percentage of natural gold.

BUCKLE: A clasp that features the same mechanism as a classic belt buckle. Sometimes used in leather or material bracelets, a buckle straps one end through a loop and secures it with a hinged prong that inserts into a hole and rests against a metal frame.

LEATHER: A material made from tanning an animal hide, leather is flexible, durable, and creates a rugged look. Different processes of tanning result in different colors and textures.

BUCKLE: A clasp that features the same mechanism as a classic belt buckle. Sometimes used in leather or material bracelets, a buckle straps one end through a loop and secures it with a hinged prong that inserts into a hole and rests against a metal frame.