Spotty finish is usually environmental factors, especially a lack of diligence during periods of storage, generally a lack of oil on blued surfaces. But during certain years the bluing appeared thin in spots or on certain parts, and some parts appeared to be sort of a plum color. Hard to tell how wartime effected manufacturing processes.
Add to the mix heavy use in terrible conditions (war), chemicals, blood, etc, and it is amazing that we see so many in great shape.
dju
|