Max, check out "strathearn" under both eBay and the dealer site Sweetbriar Gallery, where weights like this one are often available and you will also see the general price range.
[And regardless of individual views on the matter, including my own at times, Sweetbriar Gallery prices are really no higher than most other dealers.]
Leni is right about the bruise - it may affect the value quite considerably and to get it polished out could cost more than the weight is worth. But at 3 inch, it's a good example of this type.