2007 Topps Moments & Milestones is a 193-card set, released exclusively to Hobby outlets, in April, 2007. The set consists of 169 veteran and retired players and 24 cards of eight different rookies.

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One of the most bizarrely structured card sets ever produced, each of the 169 veterans has multiple variations based on the player's statistical accomplishments, similar to a mirror insert. For example, Scott Rolen's 2004 NL All-Star season is celebrated with 34 different variations (one for each home run he hit that season) of card #122. Like a mirror, each of the 34 cards is identical to each other, with the exception of a large numeral on the front side of the card. Each individual card is serial-numbered to 150 copies, but when all the different variations of each card are factored in, the production runs are much higher -- there are a total of 5,100 copies of the aforementioned card #122.