I would agree, most people are going to think of 'shiny' silver when you mention silver bars. What's funny is how attractive silver still is when it ages and becomes as you say 'dark' and 'dirty'! Silver just always looks great. It's like a fine wine and just gets better with age!
Then when you factor in something that is hand poured or handmade you now have a piece of art that is not unlike other fine antiques. It's going to be more sought after and appreciated.
As always, thanks for sharing @silveringots! Love that starburst example!
RE: A touch of Art?