[drcy]

Sentiments are sentiments.

But with a painting there is only one in existence and by design it's meant for display on the wall. A movie poster may not be unique, but it is also intended for display. I think display value is the number one reason whey it's more accepted.

Also, a painting is made up of a lot of materials that may deteriorate or change color with time. The varnish on old oil paintings turns brown and restoration often involves removing the brown varnish to reveal the original colors.

Also, irrelevant to desirability or acceptability, in all areas you have to disclose at sale when an item has been restored. My brother in law collected movie posters and, while he saw nothing unethical about restoration, he did say it effected value and you had to disclose any restoration. He said a Vg poster restored to Mint was worth more than a Vg poster, but worth less than a naturally Mint poster-- so you would get in trouble in the hobby if you didn't disclose restoration.

There's nothing illegal about trimming or recoloring a baseball card. It's knowingly not disclosing what was done at sale that is illegal. And, similar to movie posters, many altered baseball cards do have value.