Amafi

Hello all, First post here on these boards and am sorry to say that it's to ask for help. I have a Hohner Jack bass guitar which was given to me as a gift, but unfortunately it has the battery cover missing. I have tried all over the Internet to locate a cover but I can't find one. Is there anyone out there that can point me in the right direction or even have one for sale? Any help or constructive advice would be greatly appreciated. By the way, I have tried sites such as allparts.com and ebay, but they do not seem to list the part. Many thanks, Amafi