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Recognise the form before judging its gradeBird's nest is sold as whole cups, strips, loose fragments and pressed shapes. Form affects presentation, yet it does not establish origin or authenticity. Examine fibre direction, nest feet, edge construction, inner and outer surfaces, and areas where gaps appear filled. Natural cups can vary considerably, while highly uniform shapes may reflect careful trimming or assembly.The bird's nest reference collection provides a photo checklist for fragile pieces. Keep loose fibres with the correct cup instead of combining all fragments.Clean appearance needs a closer readingLow visible debris may result from careful cleaning, but gloss, stiffness or unusually even colour can also raise processing questions. These signs are not conclusive from a screen. Close photographs should show fibres without beauty filters or strong coloured lighting. Never perform burning, chemical or soaking tests on goods intended for appraisal; those methods damage the evidence and may create safety risks.Check dryness without adding moistureOpen packaging requires attention to odour, softness and storage conditions. Photograph seals, inner wrapping, net weight and printed batch information. A presentation box can support the history of a lot, although the contents still need direct...
