noun, noun which may take the genitive case particle 'no'
old and new; old but unused
Describes something that is both old and new, or old but in unused condition. Often used for second-hand items that are like new, or for a mix of old and new things.
新古の品を安く買った。
I bought an old but unused item cheaply.
この店では新古の家具を扱っている。
This shop deals in old and new furniture.