Heritage 2012 included this SSP error card of Darwin Barney. His position is missing, which mimics the same mistake made on the 1963 card of Cubs second baseman Ken Hubbs.
I've been tracking eBay listings and sales of the card for almost nine years now. I was curious as to just how rare the card is. I tracked 38 listings within the first two years after its release. Since then, the listings have dwindled and there hadn't been on eBay since September of 2018.
Oddly, after 29 months of silence, two were listed within the past few weeks.