Sentence:  Hubert had given me his passport, in great excitement. [...] Admittedly most old, bloated, <WSD>calvous</WSD> Germans could double for me, and even if he hadn't been doppelganger material, with the beard I had started growing and the two black eyes, you'd need x-rays to spot the difference. 
Meaning of the word marked with <WSD> tags:  Lacking most or all of one's hair; bald, hairless.