jmpTT
856
An interesting effort.
The day, month and leap year indicators are all very legible, which is an improvement over the Datograph and Langematik perpetuals in my opinion. Aesthetically, I think the design is successful because the character of the Lange 1 design is retained, despite the addition of the perpetual calendar components.
However, the addition of the hidden tourbillon complication seems almost superfluous. Perhaps I'm being a bit unfair, given that I would be quick to praise certain other brands for employing hidden tourbillons in their ultra-complicated watches, but I would have preferred this design with a standard escapement, especially if the thickness could have been reduced by a millimeter. Perhaps I am not alone in this opinion...