Rare Coins of New Hampshire: The best kept secret in the business. Nobody knows more about originality and grading than Warren Mills. He even guarantees that his raw coins will certify as advertised. Many of my best coins came from him and I liked the company so much I'm now not only a client but an employee.

Paragon Numismatics: Andrew Kimmel is one of the "old time" toned specialists and was handling astoundingly beautiful type coins and world class Morgans long before they were in vogue. His best coins never make it anywhere close to the website but his rainbow gallery is a must see.

PNG/ICTA Grading Service Survey Results: A must read before you plunk your hard earned cash down on a coin just because it's surrounded by plastic.

A Lesson in Toning: From the eCoinPrices website. Includes an interesting discussion with a self-professed coin doctor.

The Virtues of Toned Coins: A nice article on original coins by Mark Salzburg, whose subsidiary now makes a business out of conserving coins?

Ebay: The place to go if you're looking for coins that have reached the end of the road.