Call it Downsview’s greatest gift to the world of aviation.Many successful aircraft were developed at de Havilland’s Downsview plant over the course of its fifty-year run - the Mosquito, the Tiger Moth, the Chipmunk, the Buffalo, the Twin Otter to name but a few – but arguably none had the magnitude of impact of the DHC-2 Beaver. The Royal Canadian Mint honoured the de Havilland Beaver twice, by placing its image on coins in 1999 and 2008. And it was named one of the top ten Canadian engineerin