So they do exist!
The 2012 Topps Heritage cards have been out in the market for almost a month now, and until recently a Sandy Koufax autograph card had yet to show up.
How could that be? An inquisitive collector might ask. Well, it's because Topps decided to pull a fast one.
BTW, above is the red signature card, numbered to 10, and below is the base signed card of Koufax.
Just in the past few days, 4 different Sandy Koufax 2012 Topps Heritage cards showed up on eBay. So, master-bulk-case-breaker Brent Williams did what any hardcore collector would do. He contacted a seller to find out the details. Below is his first tweet related to that investigation.
I see now. It appears that Topps did not include them in hobby boxes. Instead, they can be found in retail boxes at your local shopping center (i.e. TArget & Walmart). Brent follows up the above tweet by confirming that all 4 Koufax's that have been on eBay were found in retail boxes.
I guess that means I'll have to go to Target to try to get one. Now, should I buy a blaster box, or a rack (hanger) pack?