I made a post just a couple of days ago, thanking Jon from A Penny Sleeve for Your Thoughts for a mailing, but in digging through my stacks of cards and paper I found another card from him that requires a post. This one wasn't in an envelope, but it had a note wrapped around it, mentioning the serial number.
This card comes from the 2015 Panini Cooperstown Induction Images insert set. It's a Gold parallel of Goose Gossage, the HOF reliever whose cards I collect. The serial number on this one is # 12 / 25, which makes it a coveted 'Christmas Card,' because if you write the date for Christmas out numerically you get 12/25. I like Christmas Cards, and I collect them, but I can't take credit for the idea. Blogger defgav over at Baseball Card Breakdown has an extensive Christmas Card collection, and has done at least a couple series' of posts showcasing his Christmas Card collection. I gladly stole his idea, though, and I will take a Christmas Card when I can get it.
Hopefully as I dig through these piles I will be able to match up some more cards with their senders, so that I can properly thank the people who have been so generous to my collection. Thanks for the card, Jon!