My Business Cards are Collectors Items

No kidding.

From ibm.com:

Perhaps the earliest icon of the Information Age was a simple punched card produced by IBM, commonly known as the “IBM card.” Measuring just 7- 3/8 inches by 3- 1/4 inches, the piece of smooth stock paper was unassuming, to be sure. But taken collectively, the IBM card held nearly all of the world’s known information for just under half a century—an impressive feat even by today’s measures. It rose to popularity during the Great Depression and quickly became a ubiquitous installment in the worlds of data processing and popular culture. What’s more, the punched card provided such a significant profit stream that it was instrumental to IBM’s rapid growth in the mid-twentieth century.