소장품이 · 소장품을
collection item, holdings (of a museum or collector)
Example
이 박물관의 소장품은 만 점이 넘어요.
This museum's collection has over ten thousand pieces.
Word parts
소 that which+장 store+품 article
Literally 'stored articles'.
Good to know
Homonym: 소장 can also mean a director (of an office) or a major general.