Does anyone know where I can get a signed autograph of vincent for my eighty five an old grandmothers birthday

I have not done this but there is an address that toi can write to and include a self addressed stamped envelope and they say a picture will be sent. The address is: Vincent D'Onofrio
c/o loup Films
Law & Order: Criminal Intent
Pier 62 & Hudson River
New York, NY 10011
I don't know if the pictures are signed ou not.