Dan,
No other No 1s so far known but who knows what might still come out of the woodwork.
Maybe 25 No 2s in existence. Three across here in the UK, some in Canada and I think maybe 2 in Europe. Malcolm probably has more exact numbers
My son and I have one each both from Ontario province in Canada. Both good runners and very original. They came from within about 50 miles of each other
Three No 3s known of
John