Final answer:
The answer explains that there is no information available about the tattoo of Mr. Sir and what it would indicate about him.
Step-by-step explanation:
Based on the provided information, we do not have any direct knowledge about the tattoo that Mr. Sir may have. The information given only describes clothing, a book, and other items related to Dr. Beardsley, not Mr. Sir. So, we cannot determine what kind of tattoo Mr. Sir may have or what it would tell us about him.