  We report synthesis, structural characterization, and magnetic measurements
of amorphous Mn$_{12}$-acetate ribbons with a triclinic short-range crystal
order not previously seen in experiment. The ribbons exhibit the same structure
of Mn$_{12}$ molecules and the same positions of tunneling resonances on the
magnetic field as a conventional tetragonal Mn$_{12}$-acetate crystal. However,
the width of the zero-field resonance is by at least one order of magnitude
smaller, indicating very small inhomoge- neous broadening due to dipolar and
nuclear fields. Possible origins of this effect are discussed.
