If you wanted an example of the impact of a change of attribution has in the #artmarket, here's one for you.

In November 2022 a C17th pinging of Moses, then attributed to 'a follower of Guido Reni' was sold (against an estimate of 6,000 euros)... now reattributed to Guercno (a well-known Italian Baroque painter), its coming up for sale in #Paris with a price expected to be 'in the region' of 2m euros!

Same painting... different attribution leads to price rise of over 33,000%

h/t Art Newspaper