I've managed to miss the flowers on the earliest ones but Ian kindly took these for me of the ones in flower now....
Each type will have two photos, the first just of the flower and the second with a ruler in to show the scale......if the flower shows above the top of the ruler it is bigger than 30cms.... if you see the flower topping out at the 6cm mark on the ruler it means the stem was 24 cms high..... hope that is both clear and useful!?
Darren already posted his 'Marzo' but I have two different types under that name.... this first one is the correct one, I thought.... the second is something other, though it is the same as Darrens... but cannot be correct because of the orange trumpet....
Still researching this but given that N. cordubensis is one of the parents, I think the first 'Marzo' is the correct version, tho' pix on Daffseek vary!
http://apps.rhs.org.uk/horticulturaldatabase/daffodilregister/daffdetails.asp?ID=227752http://daffseek.org/query/query-detail.php?value1=Marzo&lastpage=1Marzo, 7 Y–Y, John W. Blanchard, England 1996