無銘 (むめい) Japanese meaning | KotomoraFreq.FrequencyTop 100,000 This painting is unsigned, but it is thought to be from the Edo period.
Even an unsigned sword can be highly valued if it is of good quality.
Compound of 無 (mu, 'without') and 銘 (mei, 'inscription, signature'). The reading むめい follows standard on'yomi.