Quest for Panasonic tr-001 parts

hello all. i found a panasonic tr-001 handheld recently, although it's missing both the power cord and the battery pack. partsstore.com had the cord in their catalog but they're out of stock and will not be getting any more.

any thoughts on finding these parts or something compatible? i'm wondering if there's any chance panasonic used the same cord on a more common product back then.