The signature is the authentication of any valuable artwork!
The value of an artist signature in art is undeniable. It attests to a work's authenticity and officially declares to whom the work belongs, hence adding full value to an artwork. Some artists sign with their complete name, others with their initials or just a symbol. You also have to bear in mind that some artists changed their signatures over the course of a lifetime and that each individual signature is naturally different.
This compilation is an ongoing work, consequently, more artists signatures will be added in time. I hope you enjoy this collection of famous artists and their signatures.