These ducks come in remarkable condition considering they are over 60 years old. 
There has been no broken wing tips, beaks of feet. Amazing when you think they are made from plaster. 
They have some age related wear only to be expected considering their age.
Small Duck measures 5 1/2" (14cm)
Middle Duck measures 8 1/2" (21cm)
Large Duck measures 9" (23cm)
They are not quite a full matching set, the larger two are made by C.ltd and are plaster. 
The smaller one only has a number, no makers mark and is ceramic.
Once hung they look stunning together, for this reason I am not asking silly money like others out there. 
Please view all the photos carefully as they form part of the description.