Card Manufacturer: ???
Card Set: Baseball's Top Twenty
Card Number: 20
Card Type: Broder
Here we have what is called a Broder. A broder is an unlicensed sports card. Meaning who ever made this set of cards did not have a license from MLB or the players association. You'll notice the lack of any copyright or trademark on the back of the card. If you want a better definition you can look at the one at BaseballCardPedia. The Trading Card Database lists six different Broder sets from 1989. You can see the checklist of this set here. The Standard Catalog does not list these at all. But the name Broder came from a father/son team. The father Ed Broder created some sets back in the 60's and 70's and his son Robert was a freelance photographer. Here's another great link to some collected Broder sets and a little more info.
Regardless, the checklist for this set, which is 21, has some big names. The issue also looks pretty nice. A nice crisp, focused photo and while the back has minimal information it's laid out very nicely. As far as I can tell this is the only Yount Broder from the 1989 sets produced. He does have a card in the 1986 Broder set though. And I wasn't able to find an information on who produced these cards, although, since they were produced illegally that's not surprising. I also could find no information on how these sets were distributed. Possibly thought ads in sport card publication or they were solicited to card shops.
Anyone know anything else about these cards? I'd love to know.