This mini guitar (size: 16.5in by 6in) was hand signed by Gus, Thom, and Joe after a show they did in Portland, Or in late 2023. This item has been certified authentic by JSA (James Spence Authentication). You can verify the JSA serial number on their site. Spenceloa.com. That number is, AJ59635. Payment must be received within three days of purchase unless otherwise specified. Thank you!