It obviously dates from the 70's (1974 I believe, forgot to check) and I'll be making the shirt.
The fabric is from my local fabric shop and is a really thin and gauzy, I'm wondering if it will hold the weight of the zip well but as I have another piece of this fabric that I bought the other day I am happy to give it a go and find out. My zip is also vintage by the way, it came from a bag of stuff I got on Freecycle!
Still need to dig through the button box which houses my Great Aunt's collection as well as my own, I've been lucky since I got her button tin to find the right buttons for almost every project from her collection.
Anna