The Estevan Police Service is warning the public to keep an eye out for counterfeit money - particularly with large bills.

Police reported a fake $100 bill that was used at a restaurant Wednesday night in Estevan.

The Bank of Canada identifies nine security features you can watch for on their polymer notes that began circulation in 2012. These are from the vantage point of viewing the side of the bill with the person's face. They apply to the $5, $10, $20, $50, and $100 denominations.

1. Look for a metallic portrait of the person that is featured prominently on the bill.

2. That portrait will appear on a large window (a transparent part wider than the portrait).

3. Beneath that, 'CANADA' is written in transparent text.

4. There are small numbers below the transparent 'CANADA' text.

5. There is a maple leaf border to the top left and bottom right of the vertical transparent window that overlaps the window.

6. A frosted maple leaf window is located in the top-left corner.

7. The middle of that maple leaf contains hidden numbers.

8. 'BANQUE DU CANADA' and 'BANK OF CANADA' are written in raised ink to the top left and bottom right of the transparent vertical strip on the right (by the maple leaf border).

9. There is a metallic building at the bottom of that transparent window

Here is a graphic taken from the Bank of Canada's website showing the aforementioned security features.

A graphic showing the security features on a $20 bill