Well I can help with the mystery a bit but not really. I just remembered buying a Captain Midnight book (the only one I ever purchased) years ago when that Crippen collection first hit Heritage.
I just checked my heritage account and sure enough . . .it was that book! Anyhow, it did come with that certificate. I was just starting to collect a bit of golden age and it was affordable.
However, I sold the book a year or two later and of course the certificate went with it. I didn't keep records of who I sold things to so that is as far as the help goes with me.
Hard to remember things from 15 years ago or so. Wish I would have bought then what I ended up collecting now which is PCH. Hindsight is always 20/20
17051
Captain Midnight #27 Davis Crippen ("D" Copy) pedigree (Fawcett, 1945) CGC VF+ 8.5 Cream to off-white pages. Overstreet 2006...
Your Secret Maximum Bid was: $204 ($243.78 w/ BP )
$204.00
$39.78
$243.78