Abstract: A signal-emitting arrangement adapted for non-destructive attachment to a valuable garment, such as a fur coat, is described. A pair of large-area plates are hinged together along corresponding longitudinal edges thereof, one of the plates bearing a signal transmitter. A plurality of corresponding projections and recesses are arranged along the other longitudinal edges of the respective plates so that when such plates are pivoted toward each other with the edge of the garment therebetween, the projections pierce the garment and enter the recesses. The projections and recesses are distributed over the longitudinal edge in staggered fashion to avoid undue force concentration on, and distortion and buckling of, the garment edge. A pair of separate camming projections disposed on one of the plates outside the garment-piercing area of the other projections is releasably lockable in separate aligned recesses on the other plate.