[Lordstan]

VLG,
First let me say that I do not claim to be an expert.
My opinion is that both of those signatures pictured are stamped.
I think the signatures in the pictures you posted are almost identical. I believe that any differences you see, relate to the quality of the pictures used and that the balls perhaps have aged differently due to different handling over the years.
If you post pictures of the ball in its entirety, as opposed to individual close ups, I think it should be fairly easy to tell if it's stamped.
Best,
Mark