Table 3. AMS radiocarbon dating results of organic layers

Sample	Material/location	Pretreatment	pMC (%)	Interpretation
Sample-1	Paper layer, lacquer layer	AAA	145.55 ± 0.47	Modern carbon(post-AD 1950; bomb carbon)
Sample-2	Fiber layer, internal layer	AAA	147.85 ± 0.45	Modern carbon(post-AD 1950; bomb carbon)

AMS: accelerator mass spectrometry, pMC: percent modern carbon, AAA: acid–alkali–acid.