?? I'm not seeing any 1s without serifs anywhere on the $10 or $100.
In the accompanying image the red oval shows the 1 without the serif "l" and the ones with the yellow oval show the one with the serif "1"
{http://img834.imageshack.us/img834/5816/serif1100polymer.jpg:http://img834.imageshack.us/img834/5816/serif1100polymer.th.jpg}
If you carefully look at the image of the $10 notes you will see the same thing.
There is however something odd with the arrangements of the numerals that are sideways near the window (as in red oval in this image) between the various notes. In all notes except the 100 the numerals are flipped horizontally in the same column. In the 100 they are flipped vertically - This may be difficulty to get but I am working on creating an image that will show it.
Love to hear other thoughts about why this design decision may have been taken. Perhaps I might inquire with BoC. Anyone know of any contacts at BoC?