A leader in autograph authentication. With one of the largest signature exemplar libraries, ACE is able to combine their expert analysis with side by side comparison of known genuine signatures. Items submitted for certification are carefully reviewed individually by an autograph expert. Each signature is meticulously studied and analyzed based on size, spacing, slant, flow, pen pressure, and basic form. Each of these characteristics provides key factors in the determination of a signature's legitimacy. Autograph Certification Experts has also taken the additional steps to ensure the security of our certification labels. Our tamper evident security labels are nearly impossible to remove without damaging, making alterations easily visible for the utmost consumer protection