Thank you for viewing. This is a feeding container for Japanese white-eyes (Mejiro). It is believed to be from the mid-Showa era. The metal fittings can be attached to standard birdcage gaps. Sizes are not uniform; the thickness and shape differ. As it is old, there is some deterioration. Please check the photos carefully before purchasing. Antique Birdcage Java sparrow Small sake cup Type... Pottery