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細節
                                        
                                            A GOLD AND STEEL 'TUBOGAS' NECKLACE, BY BULGARI
The coiled collar necklace of alternating blackened steel and gold bands, circa 1970, 14 ins.
Signed Bulgari, no. BD 5091
                                        
                                    The coiled collar necklace of alternating blackened steel and gold bands, circa 1970, 14 ins.
Signed Bulgari, no. BD 5091
出版
                                        
                                            Cf. A. Triossi, BVLGARI 125 YEARS OF ITALIAN MAGNIFICENCE, Milan, Skira Editore S.p.A., 2010, p. 199-203