Now safely preserved in the protective shelter on the new-ish Rail Museum at Thirlmere the water tanks and boiler of Shunter 1308 were quite freely accessible to skallywags and the elements on a siding for years. And it appears some of the rust might not have been externally climatic but undrained and stored within the tanks.
Linhof Technikardan 45S, Schneider Apo-Symmar 210mm ƒ 5.6
Kodak T-Max 100, T-max RS, Jobo ATL 2 Plus Expert Drum