Standard rules apply. PayPal, check, MO. No bad actors.
I don't recall the last time a WWII Okajima was offered, they are not common at all and prized. The top tier would obviously be an anti-Japanese cover, but those are even rarer. This one is a German cover, but has a brutally racist story toward the Japanese (see pictures). Given the back story on this pedigree, that puts this particular book well into the top tier of desirability, and makes for a pretty remarkable piece of history. As such, I'm asking a high price, but not far out of line from what other camp coded books have been fetching; however none of the recent sales had quite the WWII or anti-Japanese ties.
Asking $2000 shipped world wide.
Book grades at an attractive VG. It looks much nicer, but has some bug damage along the back cover spine. There's also a piece out of the margin of a page that looks production related. Paper it typical white for the collection.