  The spaces of higher-order differential operators (in Dimension 1|2), which
are modules over the stringy Lie superalgebra K(2), are isomorphic to the
corresponding spaces of symbols as orthosymplectic modules in non resonant
cases. Such an osp (2|2)-equivariant quantization, which has been given in
second-order differential operators case, keeps existing and unique. We
calculate its explicit formula that provides extension in particular order
cases.
