My dear Watson, let us tackle this systematically. We need the following information:

• Do the labels specify a full sender address in Germany?
• If so, from a private person or a company?
• If it is from a company, does it specify or suggest a branch, e.g. Asian food?
• What do the other labels say?
• In what way does the bag look Asian? Modern or traditional? What country or area of Asia?
• Is the addressee a medical doctor? Do you know anything about his profession or occupation?
• What shape is "About two time size of basketball"? One on top of the other, or side-by-side?
• If one of the heads is the Doctor's, whose could the other be?
• Is there any connection to stuffed two-headed calves, allegedly on display in German museums?
• Does the Doctor look old enough to have some wartime connection to Germany? Bomber pilot? POW or warden of POWs?
• Could he be Doktor Mabuse?

Please tell us every detail, however seemingly unimportant. The Mudcat MasterMinds will solve the case swiftly and elementarily.