Observe first · conclude second
Identify by evidence,
not resemblance.
Record what is actually visible. The desk follows only documented paths and stops when an observation is missing, conflicting, or outside the register.
Vintage Parker 51 · Filler path
Read the construction.
Use only features you can see without repair work. Remove the normally removable barrel if it turns freely; do not force, heat, or dismantle a pen for this worksheet.
Pelikan · Published model reference
Read the reference exactly.
This resolver distinguishes similar-looking text such as Model 400 and M400.
It does not infer a reference from color, size, trim, or a photograph.
Designed refusal is part of the product
The desk stops
before certainty does.
- ⅠCandidate, not match
A supported path narrows research; it never certifies the object.
- ⅡUnknown stays visible
Missing observations remain missing instead of becoming likely guesses.
- ⅢSources remain attached
Every candidate exposes the source class, locator, and access date.
- ⅣPrices remain absent
No identification result is converted into a market value or rarity claim.