Chapter III · The Evidence of Light
Folio 12 / 24
Market insight
P
rovenance turns glass from ornament into inheritance.
Median auction premium by documentation depth
A bar chart comparing premium multiples for five levels of provenance documentation, with exhibited work highlighted at four point six times the low estimate.
Median auction premium by documentation depth
Multiple of low estimate · decorative glass lamps · 2019–2024
0×
1×
2×
3×
4×
5×
1.1×
Unrecorded
catalogue note
1.7×
Workshop
paper trail
2.5×
Restoration
ledger
3.2×
Family
archive
4.6×
Exhibited
history
4.6×
with exhibition
provenance
This is the
Tiffany Stained Glass
design system, applied by
Curio Design
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