Silver Sable's very first appearance was in Amazing Spider-Man #265 back in June of 1985. That issue was reprinted with a commerative cover when Silver Sable launched her own book in June 1992, and the story of Silver Sable's first appearance was retold in Marvel Tales featuring: Spider-Man #277 in September 1993.
Reprinted Commerative Issue
The Re-telling of the First Appearance
Three Different Comics, One Story
After the Fox
Writer: Tom DeFalco Penciler: Ron Frenz Finisher: Josef Rubinstein Letterer: Phil Felix Colorist: Bob Sharen Editor: Jim Owsley Editor-in-Chief: Jim Shooter
The issue opens with the international jewel thief known as the Black Fox delivering some jewels to a seller. The police show up and the Fox escapes, but is then pursued by members of the Wild Pack, who eventually corner him. Spider-Man arrives on the scene assuming the Symkarian mercenaries are would-be thugs and assists in the Fox's escape. Cut away to the Symkarian Embassy in New York where Silver Sable, making her first appearance on page 12, is in a training session, and of course, survives a would-be assasination attempt. The final scene takes place on a dock where Spider-Man helps the Black Fox escape, and defeats the Symkarian agents, and finishes with Silver Sable and Spider-Man talking face-to-face and with Spidey returning the recovered jewels that were stolen by the Fox, back to Silver Sable.