There looks to be some doubling on the left leaf also. I have gone through my 1979 pennies looking for the date doubling and found more than 20 with doubling. They are very interesting when you find similarities between 2 or more coins. Just not going to fund your retirement.
I don't see any low 9 or small 9. From looking at the CaC link, I think that they just had some huge quality control problems for the mintage year. I also think that CaC should include a definition for "within tolerance" for some of their lengthy example listings.