Hello.
With the thickness of the 9 and the reverse diagnostic this is a very easy variety to attribute. Only need these 2 diagnostics to attribute. Really only the 9 once you get used to looking at them.
Look between the columns 4-5 from the right. There should be a simple feature to recognize. It is the 5th image down the page on copper coins for the 1960 D 1DO-003.
With the thickness of the 9 and the reverse diagnostic this is a very easy variety to attribute. Only need these 2 diagnostics to attribute. Really only the 9 once you get used to looking at them.
Look between the columns 4-5 from the right. There should be a simple feature to recognize. It is the 5th image down the page on copper coins for the 1960 D 1DO-003.

























