Perhaps the biggest mistake a card company can make is depicting the wrong player, but is the 1966 Topps Dick Ellsworth card the worst example? This card mistakenly pictures a teammate who had been deceased for 2 1/2 years.
Back in September 1991, goober's auction catalog dedicated a full page to 1912 T202 Hassan Triple Folders, with estimated values that might surprise collectors today. Three decades later, I'm taking a look at what those values were back then—and how much they've changed in today’s market.
Finding Woody Gelman’s personal collection of card samples would be a treasure trove if found together today. However, this auction of over 160 sports and non-sports samples, including a 1969 color Deckle Edge prototype of Sandy Koufax, was from April 2000 and likely broken up.
I shared Topps Magazine's tribute to Willie, Mickey & The Duke in early October. Well, the 'Topps Remembers' series continued, and in their final issue (Fall 1993, No. 16), Topps featured a fantastic piece on the legendary multi-sport champion Jim Thorpe!
A single ad in The Trader Speaks can be a window into a whole new world of vintage cards—like the 1974 Broder Pacific Coast League Popcorn set!
I know 1991 Fleer is the more click-baity set, but how many of you sent in for one of these 1992 Fleer "limited-edition" Rookie Sensations promotional sheets?
How about this for some amazing auction history: A group of eight uncut 1933 Goudey proof sheets from The Official 13th Annual National Sports Collectors Convention Auction, July 8-10, 1992. 
A couple of older hobby periodicals have so much alpha that I recommend completing the back issue runs to everyone. One example is Topps Magazine; sure, it had a lot of self-advertising, but it also had great pieces like this one about Topps' Non-NFL sets.
GM
It was a big-time hobby event in the spring of 2009 when REA sold the nicer of the two known 1915 E145 Crack Jack Advertising Posters for $152,750. The lot's description said it had never been sold before at auction, but Goober's seems to have offered it in their September 1991 catalog.
I did, yesterday! Could barely walk this morning after that run!
One of the rarest team-issued photo sets, the 1950 Pittsburgh Pirates Picture Pack is a 26-photo gem, with several images used as the basis for 1951 Bowman cards. Kiner is the set's highlight, but its original envelope is rarer and nearly impossible to find. 
Here's another great mid-90s article from Sports Cards Magazine about the unopened collecting niche; this one from Doug Koztoski includes info from Mark Murphy, the Baseball Card Kid. 
Excellent, I just woke up, but I’ll need a nap later 😉
