I fear this might be an old question, but did not see an answer after a quick search.
My buddy Art and I picked up a pair of these gems yesterday. The bottle looks like a current centennial except for stating bottled in Louisville. It is in a cute purple-ish box stating "The Bourbon Herritage Collection".
There was also a Bourbon Heritage Collection Old Charter Proprietors Reserve on the shelf. I didn't pick it up because I like the 12yo "Classic 90" at 1/2 the price. If this older Proprietors is anything magical, let me know and I'll go back for it.
We opened one bottle of the Centennial. The cork was very fragile and had to be destroyed to get it all out. We poured the contents into another container, cleaned all the cork fragments out of the bottle, and then filled the bottle back up.
We did a side by side with a current Frankfort bottling. I found them to have a different flavor. To me, they were similar, both roughly as tasty, but definitely different.
I also noticed that one of my newer centennial bottles has very little stamped on the bottom, but these older bottles are made by "Clyde Forth Packaging Co, UK"
The question is of course, is there anyway to know what formula is in this bottle? Is it S/W, Bernheim, BT?
Thanks,
Mike