Lost jewels and dirty mainsprings

Another installment in the “previous watchmaker” chronicles:
  1. Previous watchmaker looses cap jewel for balance. He replaces with an incorrect smaller one. Proper technique for installing a cap jewel would make losing it in the movement unlikely. 
  2. As I disassemble I find his lost cap jewel. 
  3. While I see relatively fresh grease in the watch elsewhere and multiple service marks, the mainspring looks like it hasn’t been cleaned in 40 years. Bad watchmakers don’t clean your mainspring and that’s a very bad thing. 
  4. Pallet stuck to bridge with an abundance of oil in all the wrong places.

Watchmaker foibles