Answer: simile
Explanation:
A simile is a comparison between two things (the man and a handful of dimes) that uses “like” or “as”.
The correct answer is "adverb". This is because "within the old trunk" refers to the place where it was found, not a description of the trinket itself.
In direct characterization character's personality is explicitly described. Indirect characterization on the other hand uses dialogue, actions and other non-explicitly descriptions. Fro the given sentences the following sentence is example of direct characterization:
The door opened and in came ridiculous Reginald, as dapper and debonair as ever.