Classical Guitar. (Littleover DE23)

I am looking for a classical guitar please, nylon strings, half size, three quater size or full size. .to teach grand children, as I currently have to show/ exlplain and hand my guitar to them. So a second guitar would mean they could copy better. Pictured is a typical "classical" guitar, they always have the two cutaway sections at the top by the tuners. Thanks for looking