From what I’ve read, Queen Elizabeth forbids any members of the Royal Family from signing autographs.  The picture taken below was likely done after the couple was already married.  If so, it then would be highly unlikely that the Duchess would sign this photo.  Did PSA/DNA get another one wrong?  This is being sold by a high-volume autograph dealer on eBay who likely has a fairly big account with PSA/DNA.

There is also another similar photo, taken in the same setting within minutes of each other, supposedly signed by Markle, and authenticated by PSA, yet the two autographs do not look very similar.

What do you think?