${{\boldsymbol K}{(1630)}}$ $I(J^P)$ = $1/2(?^{?})$
Seen as a narrow peak, compatible with the experimental resolution, in the invariant mass of the ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ system produced in ${{\mathit \pi}^{-}}{{\mathit p}}$ interactions at high momentum transfers.