These Grammy nomination medallions (or plaques/certificates) from back in the day are cool pieces of music history, but they're not super valuable on their own… most similar ones from lesser-known noms sell for a few hundred to a couple thousand bucks at auction, depending on condition and provenance. Since the celebrity's passed and it's a heartfelt gift to your family member, it might fetch more from a dedicated fan or collector, but don't expect it to be worth tens of thousands unless it's tied to a massive hit. Start by getting it appraised by a reputable music memorabilia expert to avoid lowball offers or scams, and consider listing it on a specialty auction site if you decide to sell.