A favorite oddball card from 1990 or later
I'm reaching into my Carl Yastrzemski player collection for this one. It's a 1992 Ziploc. I wasn't sure if it qualified as post 1990 or not so I had to double check the copyright date. In the process of doing that, I found another way that phone cameras can be useful; to enlarge the small print on the back of cards to read it! My eyes aren't what they used to be with small print and that kind of dampers collecting a bit.
A favor relic/manufactured relic card
This one offers one last look into my Aaron Sele PC. It's 2001 Upper Deck Gold Glove Leather Bound Gold version serial numbered to 25. This and the base version are the only relic cards I have with leather from a game-used glove in them. I guess that's why it's a favorite.
A favorite card from before 1950, whether you own it or not
The 1916 Sporting News is the holy grail for me and many other Red Sox collectors. The Babe is in my opinion the greatest baseball player ever, and to have Red Sox cards of him is for those of us putting team sets together both a blessing and a curse. There are so few authentic originals in circulation, and so many reprints, that it's expensive and risky business to go after it. I do not own this card. I don't expect that I ever will.
Your favorite card in your collection
It's a good thing this one was last as it gave me time to go to the bank and retrieve it from my sportscards safe deposit box for a scan. I have four Tris Speakers from his playing days with the Red Sox. They're my four favorite cards in my collection. This is my favorite of the four because of the vibrant color. The gold flecks in the border are kind of cool too. This is 1911 T205. The design is quite exciting for it's era. His T206 and T207 cards are just player and border. Speaker is one of my all-time favorite players. He was nearly Cobb's equal in a period where batting average and stolen bases reigned supreme.