Yeah, they're his wife's hobby.
4 seconds sound clip from the The Big Knife (1955) movie soundboard.
You can hear this line at 00:04:13 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, French paintings, dear one? Don't you buy American anymore?
- Let nothing you dismay, sweetie, I don't know one painter from another.
- He doesn't know one painter from another.
- I wouldn't want my fans to think I'd gone arty.
- Yeah, they're his wife's hobby.
- How long do I know you, Chuck?
- When we first met, all you could talk about was the New Deal or the fair deal or some deal.
- Health, hard work, rare roast beef and good scripts.
[...]