(as) clean as a (new) pin
US /əz kliːn əz ə njuː pɪn/
UK /əz kliːn əz ə njuː pɪn/

1.
impecable, limpio como una patena
very clean or neat
:
•
After she finished cleaning, the kitchen was as clean as a new pin.
Después de que terminó de limpiar, la cocina estaba impecable.
•
His car is always kept as clean as a new pin.
Su coche siempre se mantiene impecable.