Which Mickey Mouse cartoons?

[Rumpelstiltskin]

As we know, the ears of Mickey Mouse looks exactly the same no matter what angle we see him from. But I have heard there are some cartoons where the animators actually tried to draw them a little more realistic, so that they would look different when we saw them from the side than from the front. But if this is correct, what cartoons are we talking about?

[Lars Vermundsberget]

"A Gentleman's Gentleman" from 1941, at least. There could be one or a few more, but it was done only for a rather brief period and the number of MM titles a year had slowed down by then.

[Rumpelstiltskin]

Thanks. We also have the computer animated christmas movie feature Mickey Mouse and Donald Duck and the rest of the team, but it is the old classics I had in mind.