The banker's lamp was cool because it fit in a confined space and it could shed light directly on documents. Nothing was better for shedding light on a work surface. While it didn't make our last move, it was also cool for creating a vintage look.
A Banker's Lamp - photo by Sándor Iskender (https://www.flickr.com/photos/iskender/126062252) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons |
You can just imagine this kind of lamp on a private eye's desk. Here is a faux antique banker's lamp from Amazon and a compilation of Dashiell Hammett novels that I highly recommend.