In my limited experience it seem that there are two types of collector:
1) The collector who has no interest in shooting (might have the odd plink now and again) but is passionately interested in the history of the collection. In general for them conditions must be original, including any wear/modifications/additions which are part of the gun's history and it does not seem to matter even if the gun does not work..
2) The shooter who becomes interested in older guns but is primarily a shooter. In general for them condition is not so important and re-finishing is also not so important - how they shoot is the primary interest for them.
I can understand both views but for me a gun which does not work is not interesting other than perhaps as a fixer upper.
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