Need Help Identifying A Signature On Old Vatican Stamp Set I Inherited

*** Moved by Staff to a more appropriate forum. ***
Greetings from NYC! My name is John and I recently inherited my grandfather's stamp collection. While going through the collection I came across an old Expertization Certificate from the 1950s that included an "all signed" comment at the end. It took a while but I found the stamp set that is signed and have posted that signature along with this message. Is it familiar to anyone?

I realize that signature verification is a tricky business but how about those dots around the signature? Are they significant? What do they represent?

Why not post the certificate?

Excellent point! However, upon further review the certificate I thought I had is actually the invoice from Friedl. I am sorry to have incorrectly identified the document I have - and will post it if it is still of interest - but I am VERY new to the hobby and let my enthusiasm, I guess, get the better of me. On the other hand, the good news is that I have identified the signature on the stamp set: Herbert J. Bloch!

These kinds of mysteries are pure joy to finally crack but damn exhausting on the trail of. Whew!

Show what documentation you have. Given the time frame, it is likely an expert signature. The dots are just part of the signing. If enough folk review this thread, you may get a name ID on the signature.

Edit:

Just noticed this was posted in "Testing." As such this thread will die shortly.

If you look at the lower right of your post, you will see a contact link. Use it to ask an administrator to move this thread to the correct location.

For anyone that does not have it, a database of expertizing marks:

https://www.filatelia.fi/index.html?

I saw that link, thank you, but I think it has been changed to:

https://www.filatelia.fi/experts/

On second thought, even that link might not be working as well as it once did.

My link just worked for me from my post.

And Thank YOU, Parcelpostguy. The post has been moved, as per your suggestion. Just to be clear: I now know the signature to be Herbert Bloch's. Below is the invoice I mistakenly called a certificate.

Too bad the cert is lost. That is a pricey set.

Does anyone know what a Friedl certificate looked like in 1958? I mean, is it possible that the above document along with the signatures on the stamps amounted to a Friedl certificate at that time?

The disclaimer on this matches the disclaimer on Friedl certificates from the 1970s... the only difference of note that I can see is the picture of the stamp on the 70s cert.