  Ordinary Coincidence Site Lattices (CSLs) are defined as the intersection of
a lattice $\Gamma$ with a rotated copy $R\Gamma$ of itself. They are useful for
classifying grain boundaries and have been studied extensively since the mid
sixties. Recently the interests turned to so-called multiple CSLs, i.e.
intersections of $n$ rotated copies of a given lattice $\Gamma$, in particular
in connection with lattice quantizers. Here we consider multiple CSLs for the
3-dimensional body centered cubic lattice. We discuss the spectrum of
coincidence indices and their multiplicity, in particular we show that the
latter is a multiplicative function and give an explicit expression of it for
some special cases.
