How does the reader know that Mr. Oliver Bacon is a successful and wealthy man?

In the short story "The Duchess and the Jeweller," Oliver Bacon is shown in his stock room and his private residence. To give an understanding of the wealth and success he has achieved, the reader is shown several things. First of all, you see the rich decorations, including a massive portrait painted of his mother which was obviously expensive to create.
Another evidence, probably the biggest of all, is when he opens up his multiple safes. He has at least six large, steel safes, which clearly portend valuable items being secured away. To prove this fact, upon opening them, the reader is shown that they each contain innumerable jewels, showing that he has amassed significant wealth, and that his collection of jewels is incomprehensibly vast.