19mm non return lever with pinched shank on sprung rose  tested lever set grade 4,...

19mm diameter pull handle with leather wrap , can be made in a variation of finishes for example...

S8458 152x43mm sadler concealed lever lock available in alumium. 

AG20RPP4 Polished gold anodised pull handle 20dia x 300mm c/c on 50mm x 400mm plate