Not Beavers I know, but designed by Neil for the final two coins in the Royal Canadian Mint "Aviation Series".

They are de Havilland products however !

The Coin Page

© Royal Canadian Mint - Dora de Pedry-Hunt for the Queen - Neil Aird for the DHC-6 and portrait cameo.

© Royal Canadian Mint - Dora de Pedry-Hunt for the Queen - Neil Aird for the DHC-8 and portrait cameo.

Photos: © Royal Canadian Mint
The de Havilland DHC-2 Beaver was represented on the fourth coin in the Aviation Series. This was designed by Peter Mossman.

© Royal Canadian Mint - Peter Mossman

 It has also, more recently, appeared on the November 1999, Canadian 25 cent piece.

© Royal Canadian Mint . Brian R. Bacon

Below is an article I wrote for the CAAA Journal "Aerial Views". . . for the record.

Royal Canadian Mint - Press Release