Genuine

Forgery
Gooding #5F1 - Type A. Even assuming that they are of the proper color the switched inscription tablets alone will tell you that Types A, B and C stamps on the right are forgeries.

Bartels #C5.1; Earee


Gooding #5F1 - Type B

Gooding #5F1 - Type C
Gooding #5F2
Although the inscription tablets are in proper order the stamp color alone is more than enough to conclude that it is a forgery.