Google Plus and Google Places are getting even more tied together. Now you can Verify your Google Plus Business Page and tie it to your Google Plus Places Page.
If you have a Local Business, you will need a Google Places Page and a Google Plus Business Page and then you will request a post card be sent for verification. Yes, the post card will have a Pin that you will need to have for the verification.
Here is the official Google post Verifying a Local Google + Page
There you go!