This 1890s built Tiffany fixed gear bicycle is pretty exquisite. The “silver mounted” lady’s bike comes with a Brooks saddle and carved ivory handle grips. It’s estimated to sell for between $50,000 - 70,000 at an upcoming auction at Bonhams NY in early June. According to the description “only a handful of these luxury two-wheelers were produced,” one of them for turn of the century actress Lillian Russell. Close-ups and detail shots of the elaborate workmanship after the jump.