Pierre DeRoche’s TNT Royal Retro model is unique as it has four (4) retrograde seconds’ hands function on four 10-second sectors. Coupled with two additional complications such as a power reserve and a date function, this particular piece is sophisticated. The skeleton case makes it a visual wonder. Please note that sometimes, the SCRIBD viewing window may not be able to display all the pictures in the document. Please download the document to view it properly.