Monnin back on the streets!
After working on the Monnin all this afternoon and evening I have her back together and running strong.
The winding and calendar issue was all traced back to a faulty crown with stripped internals preventing the dare from being set or winding.
With all parts in stock this watch has been ultrasonically cleaned, all new seals, a sapphire crystal, and a new crown.
Ready to be shipped back to the owner after timing and pressure testing.