Action Comics # 1 : the first appearance of Superman .
Golden Age comics are the most valuable,but spiderman's first appearance sold for 1.1 million dolars even though is a silver age comic.
The Wikipedia claims that the Black Lotus is the most valuable card ever.
Some of the most valuable Marvel comic books include Amazing Fantasy #15 (first appearance of Spider-Man), X-Men #1 (first appearance of the X-Men), and Fantastic Four #1 (first appearance of the Fantastic Four). The value of these comics can vary based on their condition and rarity.
Lipitor which expired in 2011 was the most valuable patent ever with sales exceeding $105 over the life of the patent.
The very first appearance of Spider-Man in Amazing Fantasy # 15 is worth a million dollars.
Superman
The determination of the most valuable antique tractors will depend on the brand, who you ask, and how many were made. In general the most valuable brand is Allis Chalmers as they tend to be rarer and more well-known.
elana mcclendon is the best and the most flawlest girl ever
The greatest comic ever written is "Dominate Bombinate League" by Josiah Balkissoon.
It is william Shakespeare Calvin john sons is the coolest though
Stan Lee..... buts just a guess
The most valuable stone is typically considered to be the diamond, followed by sapphire, ruby, emerald, and then semi-precious stones such as amethyst, citrine, and peridot. The value of a stone is determined by factors such as rarity, color, size, and clarity.