Yes, "Bohemian" may be as close as can be guessed. But it could also be French.
Peter Von Brackel's book, covering these types of weight, does not show a clear example with such a "solid" white base layer.
For general information, if I see a "5-bubble" weight of this type (discounting the unintentional fifth bubble without a stem), I do consider the possibility of an Ysart source! Paul Ysart certainly made some early (1930s /40s) "harlequin" weights with four outer bubbles.
However, with the stray fifth bubble and the small, but quite high, round pontil mark I then veer off towards the continental European versions.