Observation
> **RAW SOURCE-FRAME AID · CROPS AND PRESENTATION SCALING ONLY · NO ENHANCEMENT OR INTERPOLATION** The critical distinction is therefore **complete silhouette versus partial surface**. Panel A supports a saucer-like screen silhouette. Panel B supports a convex hull section and rim, not a full teardrop planform. Panels C and D show that the later production itself continues to use complete disc/lenticular craft forms.
