Vintage fountain pens combine mechanical condition, material stability, historical variation and collector demand. Document first, identify second, and intervene only when construction is understood.
1. Cap lip
Cap lip should be evaluated in context rather than as a single yes-or-no feature. Record what you can observe, distinguish confirmed facts from assumptions, and avoid operating an unfamiliar mechanism merely to test it.
2. Barrel threads
Barrel threads should be evaluated in context rather than as a single yes-or-no feature. Record what you can observe, distinguish confirmed facts from assumptions, and avoid operating an unfamiliar mechanism merely to test it.
3. Lever slot
Lever slot should be evaluated in context rather than as a single yes-or-no feature. Record what you can observe, distinguish confirmed facts from assumptions, and avoid operating an unfamiliar mechanism merely to test it.
4. Section
Section should be evaluated in context rather than as a single yes-or-no feature. Record what you can observe, distinguish confirmed facts from assumptions, and avoid operating an unfamiliar mechanism merely to test it.
5. Blind cap
Blind cap should be evaluated in context rather than as a single yes-or-no feature. Record what you can observe, distinguish confirmed facts from assumptions, and avoid operating an unfamiliar mechanism merely to test it.
6. Vacuum-filler barrel
Vacuum-filler barrel should be evaluated in context rather than as a single yes-or-no feature. Record what you can observe, distinguish confirmed facts from assumptions, and avoid operating an unfamiliar mechanism merely to test it.
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