Anyone ever disassemble a distributor - need help

So if you turn it over, you get the lefty arrow over the other notch? Thats how I remembered one I saw. I think Sheppard's book references this too. Something to check on a reman for sure.
This rusty one is probably all original - still had its tag on it.
I don't recall an arrow on the bottom. But like all the ones I've seen, it has second slot - just no stamp.
upload_2020-5-24_21-26-38.png

This reman just got stamped with a dot. I'm pretty sure I've had some with two arrows. Both on top. Whether I have photos I don't know.
upload_2020-5-24_21-29-58.png