Yes - this appears to be Rev of 1938. Steps look right, but I usually look at the serif atop the S in PLURIBUS. If there is a defined serif, it is Rev of '40. I don't see one on your coin but it can be hard to spot in photos.
Grade - I'm thinking mid-AU.
Grade - I'm thinking mid-AU.
"Nummi rari mira sunt, si sumptus ferre potes." - Christophorus filius Scotiae