These are parts for a later model Free-Lock hub.
View all the information on eBay
“These hubs were found on the shelf of an old jeep dealer, the one seems to work fine when tested on the bench, the other has some spline damage where it slides over the axle.”
First time for me to see those kind of locking hubs. Made from Denver?
Yep. Here’s a bunch of info on them: http://www.ewillys.com/2017/02/12/free-lock-hubs/