I know in 75+ years anything can happen to a pen. I have read the usual 51 sources and have not found an answer. Did some of the first year pens have a later clip instead of a first year clip? I know the jewels went from aluminum to plastic during 1941 and the filler also changed from the speedline. Did they change the manufacturing of the clip near the end of the run? I have seen some mid 40's pens with first year clips.
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