One of the custom chips their is mass produced production run variety so...........
Where do you see that in the picture? The only two MOS chips I can identify from the crappy pictures posted would seem to be the CIAs. And I think that would hold true, as I believe the CIAs were actually a stock MOS part, developed separate from Amiga.
It looks fairly probable as legit to me. Paw print would be Mitchy. (Jay Minor's dog -- He is also the paw print inside the early A1000 cases.)
The ROMs handwritten as 24.60. Amiga beta ROMs seem to start at 27.xx, and kickstart 1.0 was 30.xx. This fits, as well.
If it's fake, someone put some time and research into placing things properly.
EDIT: I also believe, as others do, that it's incomplete. Most of the custom chipset appears to be missing.