aviya
900
I'm going to say "both".
A bold and audacious concept (as with the Double / Triple Split, the Zeitwerk...), including the ratchet-key wind. An amazing feat of German engineering - stacking two 6-foot long mainsprings and funnelling all that energy through a remontoire. But mostly, another great example of the then still young reborn Lange "learning by doing". That double-stacked mainspring architecture (though not 6-foot long!) is now on the current generation Zeitwerk, as is a remontoire of course.
I was fortunate to be at the Manufactory shortly after the Lange 31 was released. I tried it on in their boardroom and yeah...would struggle to wear it, even occasionally. But, similar to the Double and Triple Splits, I think that is a secondary consideration to the audacity and engineering. And, anyway, there are people with bigger wrists than mine for-whom it would be proportionately less of an issue.
I think it is an amazing watch - and part of Lange's development and now, story. "Never stand still."
Great post, RDSChicago.