In order for me to properly assess what you have I will need to see images and clear, in-focus close-ups of the signature.
Please send the photos at your convenience. There is not an extra charge to provide more pictures here.
Thank you for the image - only a photo of the certificate is visible here on my end - can you please provide a picture of the sculpture and signature.
Thank you for the images.
This is actually a print that was originally an illustrated page in the book entitled (English Translation) "The First Complete Series of Sistine Chapel Figures With Four Portraits of Michelangelo"
Here is a link for you, for your records of a history and background of the complete entire intact book, which is being offered for $65,000:
Singular pages taken from the book and framed sell for as high as $100 - $200 each at auction on today's market.
I tried accepting your phone call request, but somehow there is a block on there. I will send a message to admin and let them know. I will also send an additional services offer from my end.
Just checking in to see if you viewed your answer and if you are seeking further assistance?
Please let me know.