Hello Aleksandr,
I think I saw a similar helmet once before, but can't remember.....or my grey cells teasing me?!
Anyway, it's a simple bowl, a bit out of shape at the front (not unusual for nerigawa constructions). 3 lame leather shikoro of low quality (as the bowl itself). Ukebari and shinobi-no-o are new and parts of the lacquer seems "redone" (urushi or not). So someone certainly had his hands on this piece.
Probably a Bakumatsu thing?!
The hanbo shows some repairs and dates from the Edo period, IMHO.