- Are you sure it wasn't on the right?
- It might have been.
- Like on my hand?

8 seconds sound clip from the The 39 Steps (1937) classic radio play.

You can hear this line at 00:22:33 in the radio play.

Quote context

[...]

- Well, I believe she hoped to come see you about some Air Ministry secret.

- She was killed by a foreign agent who was trying to steal it.

- Oh. Did she tell you what this foreign agent looked like?

- No, she hadn't time. She...

- Oh. Oh, yes, there was... There was one thing.

- She told me the top of his little finger is missing.

- On which hand?

- On the left, I believe.

- Are you sure it wasn't on the right?

- It might have been.

- Like on my hand?

- Good Lord. Then you're...? You're the one she...?

- The one she was trying to warn you against. The chief.

- You misunderstood her. She meant for you to kill me, not to bring me information.

- Yes. Well, what are we going to do about it?

- Ah, that's just the point. What are we going to do?

- You see, I live here as a respectable citizen. I should hate to have it known that I am not what I seem to be.

[...]