Dana 60 under 73 swinger..need id

So I picked up the start a few years ago finally got around to the restoration

As you can see I'm going to have a real issue matching Wheels LOL
I know a little bit about differentials here's the story I turn the wheel One Way both Wheels turn not sure what kind of locking device this would be any help would be appreciated
I have no history on this axle

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Dana 60 under 73 swinger..need id
Author: admin