antiquarian
/ˌæn(t)əˈkwɛriən/
adjective
Relating to or dealing in antiques or rare books.
He sought out rare and out-of-print books from antiquarian booksellers, including a set of delightful eighteenth-century guidebooks by the York publisher Thomas Gent.
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noun
A person who studies or collects antiques or antiquities.
Centuries after sword manufacturing in Hounslow had ceased, some antiquarians began collecting the surviving specimens.