Such merchandise may not be manufactured anymore, and the new old stock may represent the only current source of a particular item.
Although not an officially recognized accounting term, it is in common use in the auction and retail industries.
For example, owners of classic, vintage, and antique vehicles or other machines seek NOS parts that are needed to keep their bicycles, automobiles, motorcycles, trucks or timepieces operational, or in factory-original condition.
These owners put a premium on NOS parts.
This inventory may sell at a premium in a vintage or collectables market, such as among antique vehicle collectors where enthusiasts seek to repair their vehicles with original parts.