Bvlgari's Tubogas collection is one of the house's most enduring signatures - a technique rooted in 19th century watchmaking that Bvlgari made wholly their own from the mid-20th century onward, refining it into a coiling architecture of interlocked gold that requires no solder and no fastenings, only the precision of its own construction. These signed vintage 18K yellow gold hoops are purely about the gold: a ribbed, coiled body that moves with the light and wears with the easy confidence of great Italian design.