Are these items Ponui please?

I went to the Antiques Fair at Nelson today, and I have a question for our members. Erik and Russell would like to know where these 2 gravy jugs and sugar bowl fit in the Crown Lynn selection. They thought they might be called Punamu, but I am thinking Ponui? They are unmarked on the base except for their 4 digit numbers, which stupid me forgot to write down - 1033 I think

This is probably closer to the colouring - a steel blue/slate colour outside, with a slight hue of green, and the inside, a very thin light avocado colour. Any thoughts?

Ponui cups and saucers -
http://newzealandpottery.forumotion.net/t3257-crown-lynn-ponui-cups-and-saucers?highlight=ponui