Harness Jacks or Punch Jacks

[upnorth]

Howdy folks!
I'm looking for Harness Jacks! A knife with one blade and one punch is what I'm limiting this collection to. I've written articles about them, for Knife World
(Aug.2005) and for the Oregon Knife Collectors Association, and I'm researching further articles on these knives, and on punch technology. I f you have a nice knife that fills the bill, or information for me, I'd greatly appreciate it!
Here's an example;