I've always loved Cremone bolt hardware, it's the long vertical hardware that you often see on a set of French Doors. I think it adds such a beautiful detail to any doors (normally seen on a pair of doors). I've always envisioned this type of hardware on my double back doors, the black pair in the kitchen above. I think it would be a perfect finishing touch to these doors. I'll start looking for authentic vintage Cremone bolt hardware, but if I can't find what I'm looking for, I know it is available to buy 'new' from some suppliers who make vintage hardware. Here are more images of doors with Cremone bolts in my inspiration file.