I have just made a pair secret doors like this, but I am struggling to find a handle for the inside that doesn't have fixings showing on the outside of the door. What you have here looks just perfect
Alicia we bought it through Alexander Merchant in Austin. They rep some nice hardware lines. I'm sure a local high-end hardware company could find it for you. It's likely Sugatsune or Hafele. Best, Matt
Hugh Jefferson Randolph Architects
Risinger Homes