1939 was a transition. Both types exist for all three mints, AND the proofs, too. There are even a few 1940 proofs with the 1938 reverse.
yes ,but the coin is question is a 38 type of 38 rev , hence the wavy steps. This time period in the nickel world is an interesting one.
The standard for Full Steps is different for the Reverse of 38 and has always been different since the TPGs started recognizing the different reverses. Bridges and marks that interrupt the steps are both permitted as long as they are relatively minor and the remainder of the steps show good detail. The most important factor in determining FS for the reverse of 38 is the presence of an uninterrupted 5th step, specifically under the 3rd pillar. It can be narrowed, but it can't be broken. I hope these examples from my collection help show what the standard is for the reverse of 38. In response to the original question, I see a break in the 5th step under the 3rd pillar and think that this coin should not be designated as a Full Step coin.
very informative and a great run down of the 38 reverse. good post and learned a little that I have not read before.