It was the greatest achievement of his life. And no, that should not be taken as a facetious statement.
A wizard can have grandiose ideas of self-importance. Fickle political alliances may lead to a wizard getting voted into influential positions. Scheming, bullying, and even blackmailing, all with a modicum of patience, will allow you to achieve amazing feats.
Yet, in the end, you can't seem to fool the Chocolate Frog manufacturers. They have the rare ability to correctly assess public opinion. Meeting their exacting standards tickled Albus Dumbledore.
He had donned his favorite sparkly robes for the occasion. Albus' best wizarding hat perched upon his head. His beard received extra attention that morning. Albus stared in the mirror, practicing that signature eye twinkle before apparating to the photography studio. The end result was exactly what he hoped for.
Albus found it odd that a love of chamber music and ten-pin bowling were note-worthy enough to make it on the card. He knew of other achievements they could have highlighted. Those two toss-away facts about him had led to some very odd conversations.
Explaining the exact nature of chamber music to an 11-year-old become old after a few hundred attempts.
A week rarely passed without someone sending him an owl asking if he cared to join their bowling league.
He shuddered, remembering the extremely awkward seduction attempt from a friend of Augusta Longbottom's over afternoon tea at Longbottom Manor which included a bowling pin moving in time to a harp.
Coincidence was something only fools believed in. Albus Dumbledore claimed to be many things, but a fool didn't make the list. The Chocolate Frog trading card he currently contemplated saved the Sorcerer's Stone from falling into Voldemort's hands. And so, even if he hadn't liked the card for the fact he felt it represented the faith the wizarding world held for him, he would have to be grateful that the alchemy experiments performed with Nicholas Flamel received space next to his hobbies.
Today seemed like a fine day to change the password on the office from "Sugar Quill" to "Chocolate Frog".