Check out flickr for images. I like them!!! (at least the back
)
As for BAI, they're shutting down -
http://www.cbc.ca/news/canada/ottawa/story/2011/12/01/ottawa-layoffs-bank-note-company.html. End of 2012. Have they printed any polymers? Do we know? Yes, there are 50's with 'A' as the first letter of the prefix, but I can't imagine that it wouldn't be really hard for CBN to print 50's with a prefix of AHU or FHN. Remember the matching sets of Birds and Journey's? To paraphrase the Charlton catalog - "printed by CBN even though 'B' normally means BAI" (or something like that). How about the Birds 20's? There's a series printed that begins with the wrong first letter for that company because the Bank of Canada told them to print that prefix.
With the demise of BAI, one could assume that the first letter of the prefix now means nothing (unless Note Printing Australia has started printing our notes. Could you imagine the shipping???).
Constructive counterpoints are appreciated.
John