My 3rd gen contribution:
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Top is my 4506-1 fixed sights.
The bottom is a 5903, alloy framed and you just don't see them very often.
I have the boxes for both of them.
The 4506 was purchased many years ago in my quest to find the perfect .45.
I have not been disappointed with it.
Can't forget the 3rd gen 22s as well.