Grading question on PSA 4-7

Hi all,

I am familiar with the grading scale of PSA for high end cards and what cards usually have to look like in order to get PSA 9 and PSA 10.

However, I am uncertain for lower grades.

How would you grade the back of the following card (with a nick and significant whitening) assuming that the front is of similar quality? Would this be a PSA 4, 5, 6 or 7?

ibb.co/F0jJR7X

Thank you in advance.

KM

:whatshouldigrade:

PSA 5?