Can anyone identify the characters on this seal?
the seal, my best guess is "敏之":

the left character is 㞢 (u+37a2), a variant of 之 (u+4e4b):

http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=㞢

the right character had a left-right structure, the right component is 攴 (攵):

http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=攴

unfortunately, the left component is hard to recognise, so "敏" is my guess only.

http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=敏