Australia 6 pence 1918 km#25

What is the grade and value of this coin?

I would say that it is somewhere between VG and G.

Looks like 1918 is a scarce date for this coin:
https://www.ngccoin.com/price-guide/world/australia-sixpence-km-25-1911-1936-cuid-1044947-duid-1218371

In VF the book value is $200. I don't know how much you could get for your coin; I suspect once you get down into the sub-F grades interest drops off precipitously for serious collectors. Maybe $20?