"The Romanoff Jewels"

A personal favorite of mine.  The explanation of the famous fire opal, the girasol ring that makes friend feel safe and foe feel dread.

"You have sought the Romanoff gems. I have brought one here to show you. Gaze upon the stone that gleams from my finger. That priceless girasol was once owned by the Czars of Russia. It, alone, of all the baubles in this room, is genuine! This girasol was a gift, which I accepted as a memento of friendship from the man who owned it."

A nice cover, not action packed but a wonderful early rendering of The Shadow.

 

Now this Pyramid Books illustration is my favorite of the three covers that heralded this great tale.  The third was a second version for the paperbacks that H B Jove used.  Both by James Steranko.