A signed LP cover including the vinyl for Abandoned Luncheonette, autographed in-person by John Oates (guitar/vocals) and Daryl Hall (vocals/keyboard) of the duo Hall & Oates. In-Person Signature. Authentication: JSA (James Spence Authentication) Certification Number: X63768 Collector Note: Dual-signed LPs from Hall & Oates are highly desirable, featuring both members of one of the most successful pop-rock duos of all time. Signed vinyl from early-era releases like Abandoned Luncheonette is especially sought after by collectors of classic rock and 1970s music memorabilia. A display-ready, standout collectible from a legendary musical partnership.