I noticed that the collector is a postal worker... I haven't seen this movie yet, I've heard it's very good.
Herb and Dorothy (2008) NR Chronicling the story of unlikely art collectors Herb Vogel and Dorothy Vogel, filmmaker Megumi Sasaki demonstrates that it's not necessary to be wealthy in order to build a significant collection in this fascinating documentary. A postal clerk and a librarian, the Vogels share a passion for art, which they pursued over decades, becoming two of the most important collectors of minimalist and conceptual art with more than 4,000 pieces.