Selectro heavy duty locking hubs?

[70jimmy]

Anybody know anything about them. They are obviously very old and very tough. Looks like they would fit chevy. You grab the knurled chrome outside edge to engage. They also have a grease zerk on the face of the hub like in the middle of where the selector switch would be on a warn.

A friend found them in an old barn. Thinking they might be worth snagging for $25.00. Opinions.

 

[thatK30guy]

I've got some I removed from a Dana 60 front once. Glassbeaded the knobs clean and they are still in the box somewhere.