Anyone with Photoshop or Adobe Acrobat could tell instantly it was a fake. An authentic birth certificate from the era certainly wouldn’t have layers!
What do you mean by layers ?
….
It's indeed a fake and forgery, but of course there was no such thing as a PDF nor even the concept of layers back in 1961. Such electronic image constructs would necessarily come decades later.
Some people have shown themselves to be unusually invested in whether the asserted document reader (with its purported software and revision level) that presumably scanned the presumed (typed, two dimensional) original even could have software-wise rendered the scan as a layered PDF.
Many words have been needlessly expended in that arena, because we know by many other easily represented and understood indicators that the LFBC is beyond all reasonable doubt false and invalid for all legal purposes, since it manifests many indicia of alteration.
And as the Certificate of Live Birth repeats:
"ANY ALTERATIONS INVALIDATE THIS CERTIFICATE."