Birkins, Louis Vuitton trunks, and vintage Chanel: Collecting rare handbags can be a lucrative investment strategy. Check out 5 of the most expensive bags ever sold at auction by Christie's.

2:31pm PDT - July 15th, 2020    birkin bag - Business Insider

• Christie's is in the midst of its "Summer in the City" handbag auction, which is set to end July 28.
• The auction includes various styles of Hermes bags, including the beloved Birkin and Kelly bags. 
• Business Insider teamed up with C…