1972 dana 60, which diff cover is correct

[What’s up dock]

I'm seeing conflicting info. Painted or chrome? I thought it was painted with a part number stamped into it on the ring gear bump.

 

[T2R9]

72 would be a painted cover. And rare in a B-Body! Show us what you got!

 

[What’s up dock]

Thanks!
It's a gtx, 440, bench seat 4-speed, air grabber. Not mine, but I'm working on it for a friend.