Here's an interesting tale. I purchased this a while back based upon the first APEX certificate shown. It stated this was "United States, Scott 65E essay, Brazer No. 65TC-D, rose pink shade on experimental straw paper, original gum, hinge remnant, few nibbed perfs."
Looking at the stamp, I just couldn't reconcile the description of the paper with the stamp, so I sent it in, stating I thought they were in error.
The second certificate is what I received back with the stamp...Along with the accompanying note to the certificate which states basically that until the varieties are all listed by Scott, the APEX prefers to call these 65TC (See last image).




