Hi Petrov and Ian,
Thanks for your responses to this enquiry

Ian - Looking at Petrov's link I think if fair to assume that that is probably referring to the top coaming that surrounds the cockpit opening through to the cowl maybe? My thanks for searching it out though - all input is valued and much appreciated.
Petrov - It's strange isn't it, despite a myriad of Google searches in every variation of 'Nieuport' I could think of I never came up with your first link

Some excellent pics there and ones that will definitely be secured for the build

Assuming that the 24 was built in the same way as the 23 in this frontal area these images totally answer my question. The image of the construction of the panel opening particularly so. I had found the other image you refer to and had come to the same conclusion - it was the distinct 'hint' of such strips on this image compared to the very smooth areas in virtually all others that raised the question.
Thanks guys - unless anyone can now 'shoot down' this reasonably conclusive confirmation that wood strips it is I shall continue on that path

Regards - Tug