Judging the prowess of an artwork is a subjective thing however it’s value on the art market is often less so, with certain factors coalescing to allow the likes of auction houses to estimate the value of any given art work. Though not an exact science, these are the patterns I have observed that indicate that an artwork will rise in value.
PLEASE NOTE: This video does not constitute legal or financially regulated advice and is my personal insight. I do hope you enjoy it!