Noun
the outstanding item (the prize piece or main exhibit) in a collection
Source: WordNetI had a guitar when I was 6 or 7, a plastic guitar with the Beatles' faces on it. It would be a collector's item now. It would fetch a hefty sum, I imagine. Gary Oldman
Every experience, good or bad, is a priceless collector's item. Isaac Marion
The coolest gift I've ever gotten from a fan was from the Franklin Mint. It was a knife, and it had a picture of General Wade Hampton, who my oldest son is named after. It's a collector's item and came with a case and a stand and everything. Josh Turner
Other * The 1993 Joseph Brodsky essay Collector's Item (published in his 1995 book On Grief and Reason) contains a conjectured description of Philby's career, as well as speculations into his motivations and general thoughts on espionage and politics. Source: Internet