As for Taikan's works, it is well known that there are enormous numbers of fakes including the above, and so Taikan's paintings are protected by assigning a number called 'Taikan number' to paintings that have been appraised by experts as being genuine.
これらも含め、贋作が非常に多い事でも知られ、鑑定の結果、真筆と判定された作品には「大観番号」という番号をつけて保護されている。