No Hands Watch

Clever “no hands” watch. Nice history by WristFashion.
A decade before Issey Miyake came out with the TO or years before Ron Arad did “Look Ma, No Hands” for Alessi, there was the Time Dimension. Designed by Hans Donner in collaboration with watchmaker, Bernhard Lederer, the watch took nine years to make and was probably the first watch to contain three discs instead of hands to tell time.
No Hands [wristfashion.com]
MEN'S CHRONOGRAPH WATCHES - MEN'S DRESS WATCHES

Hello. My jeweler accidentally shattered one of the disks in my TD3 and I’ve been looking for a replacement, but cannot seem to locate one anywhere! Can you help me? Thanks so much. – Jason
i have a lederer chronograph black , purchased in ny store of lederer many years ago , curious of price , works fine ,
Paul, I am curious about your Lederer chrono. I too have a black Lederer chrono which is identical to a Heuer Pasadena, but with ‘Lederer’ & ‘automatic’ instead of Heuer & Pasadena. Can you confirm if yours is similar?