Mighty fine pick up of a covetous Marvel No-Prize. This particular No-Prize design hailing out from the stock of the year 2000. Other years and designs have had Spidey in another pose or even of the Hulk smashing across the envelope.

As with all No-Prize prizes, there is nothing inside the actual envelope itself as that is the No-Prize prized.
One No-Prize win coming from proffering a colouring "error" continuity fix in the pages of Gambit #14.
Another letter from having Stan "The Man" Lee himself answer a question on who was the greater Spider-Man arch-nemesis. Green Goblin or Doctor Octopus. For the record, Stan Lee chose the Green Goblin.