This is an old iron lock, called a "jōmae" in Japanese. It's a somewhat unusual, small size. Opening and closing has been confirmed. The thickest part of the lock body is about 2cm. The width of the locking bar is about 0.5cm. Please note that all measurements are approximate. Details are unknown, so please confirm and make your own judgment. Condition: Possible stains, age-related deterioration, signs of use, etc. Thank you for looking. #Lock #OldKey #AntiqueTools #MiscellaneousGoods #Antique