Lew - I am sorting thru various topics I missed when my computer was down for so long. I, too, have never seen a box for the 8 mm Ultra cartridge, although I have a specimen of the cartridge in my collection. The 9 mm Ultra box has been pictured in an old “Gun Report” Magazine, as I recall, and in some other places. It is nothing more than one of the Gustav Genschow & Co. A.-G. 25-round blue boxes with some black and some white print, for the 9 m/m Kurz (.380 Auto) cartridge, the box with a red diagnol banner in the upper right corner (as you view the top of the box) with “Oeldicht” in yellow letters printed in it). The only indication of the Ultra caliber is a small white tag with the word “Ultra” (as I have typed it, with the tag including the quotation marks) covering the word “Kurz” on the original box-printing.
Still, it is a rare box. Wish I had one!
Edited to clarify a statement in line two of my entry.