"It is not!" Robert protested. "There's a very good reason I don't remember my name, and it's not because it's a stupid name. I have... watchamacallit. Blood where it's not supposed to be. Highly technical term, that."
Robert fumbled in his waistcoat pocket (why were there four of them? He distinctly remembered putting on a waistcoat with two pockets that morning) and pulled out a silver case. Ah ha! Robert thrust it up in the air. "This! It's got my name on it! In it, rather. I have calling cards in it. That or opium."