Not obvious at all. The case looks to be still open...
This site your pointing to is just someone’s personal debunking site. This is not science by any means.
The photo you provided looks like a cheap imitation of Sigmond's photo.
Sigmond'sphoto:
Robert'sPhoto:
Clearly the objects in question are not the same. Under scrutiny the case is still open. Seem odd so many of you would be swayed by such nonsense.
