new old stock; NOS; unused old goods
Refers to items that are unused but were manufactured some time ago, often sold as 'new old stock' in retail contexts.
この店では新古品のカメラを安く売っている。
This store sells new old stock cameras at a low price.
Compound of 新 (new) + 古 (old) + 品 (goods), literally 'new-old goods'.