From Glitter: A signed 8x10 inch photo, autographed in-person by Mariah Carey. In-Person Signature. Authentication: ACOA Certification Number: SD69626 Collector Note: Signed photos of Mariah Carey, especially from her Glitter era, are highly collectible, highlighting one of pop music’s most iconic vocalists. The 8x10 inch format is ideal for display, and in-person authenticated signatures continue to be sought after by collectors and fans alike. A standout, display-ready collectible from a legendary pop superstar.