Ed
That's a really unusual box. I'd love to add one of those to my small collection of pre-war boxes.
For those who don't know Ray Giles, co-author of the above mentioned book, he has a large table of ammo at the Tulsa show and is always willing to help and answer questions.
At this Fall show I came across a box of Winchester pre-war 357. The stall holder had put them aside for Rays examination and purchase. When Ray found out that I was also chasing them he stepped aside and let me buy them for an excellent price. A VERY VERY nice man!