I was interested to see what was going on at Avspecs now that the Spitfire has gone.
The main project is now the restoration of Grumman G 44 Widgeon for an Auckland owner. In the background you can see another Widgeon which I understand is Warren Denholm's own example. There is going to be a bit of a resurgence of Widgeons in New Zealand as I understand that another one is being restored at Paihia.
The Widgeon bears the registration N144SL. I think this is c/n 1215 which was manufactured in 1941 and first saw service with Pan American Airways, so it has an interesting history. It most recently flew in the US with Continental engines.