have it for mine

[constantinusphilo]

The chauffeur clucked. "She's a tough racket. You can have it for mine."
The Maltese Falcon by Dashiell Hammett
What does ' you can have it for mine' mean?

 

[tedmc]

The meaning is clear if you understand the first sentence.
The chauffeur said his job is a tough one and he wouldn't mind letting the listener take over.