Nope,maker marked WB's "127" are not uncommon and it is not a
scarce maker. This maker is known for his zinc badges with cast in hinge and catch,beware there are fakes out there with this maker mark.
The WB is a common award and zounds of them awarded but indeed some maker marked WB's are more hard to find for specific
makers like C.E. Juncker(L/12),Hermann Wernstein(L/17),GlÜser & Sühne(L22), to name some scarce makers for these awards.