This is a Clark Foam sticker. It's a sticker where only the letters remain. This is from the legendary surfboard blank company that was in production from 1960 to 2005. ・Brand: CLARKFORM (Clark Foam) ・Product Name: Sticker, Cut-out type ・Color: Black ・Size: Approximately 9.5cm tall, 15cm wide If you have any questions, please comment and I will answer. Thank you for looking.