Corrosion of Navy Ship Exibition Models

The Curator of Navy Ship Models reports here:

In the ship modeling community there has been considerable speculation about what causes lead to corrode severely, how to arrest the process in pieces already installed, and how to prevent corrosion in the future.

The conclusion of the report is that outgassing from wood display cases (particularly hardwoods) creates a corrosive atmosphere to lead in sealed cases. More discussion here.