here is a fantastic display of one collection of each of the cool tool boxes of the two styles of Porta Power, and the middle bullet is the Nugget tool set, which clearly is smaller than the Porta Power
https://www.garagejournal.com/forum/showpost.php?p=6001370&postcount=374
for empty and poor condition ones, various ebay sellers are holding their breath, hoping for 250.00 to 500.00.
this one is on ebay, and at least has good condition and a set of SK sockets with Plumb and Proto wrenches. That's pretty cool, well, compared to an empty. Plumb and Proto are excellent tools, covered here on this blog years ago
and this is what they look like nickle plated and polished
https://www.1stdibs.com/furniture/decorative-objects/boxes/decorative-boxes/vintage-american-zeppelin-tool-box-blackhawk/id-f_2549392/
http://www.practicalmachinist.com/vb/antique-machinery-and-history/blackhawk-porto-power-hydraulic-jack-4-ton-155293/
https://www.wright20.com/auctions/2016/03/design/399
https://www.garagejournal.com/forum/showthread.php?t=127364&page=12
https://www.worthpoint.com/worthopedia/vintage-blackhawk-atomic-toolbox-1813724806
http://www.papawswrench.com/vboard/index.php?topic=1541.0