I am truly impressed !! This a first. In my entire life I have seen only 1 original Proof set from the '36-'42 series, and that was a '41.
I agree with all here, awesome set !! You don't see 72 year old sealed sets every day. I'd keep that set as long as I could.
Sorry to necro this thread - do you still have this set? I have every set from 1950 on in OGP, been looking for these forever, it seems they are genuinely rare.