Gauge-Mediated Supersymmetry Breaking Signals in an Electron-Photon Collider

We show the usefulness of an $e^{-}\gamma$ collider with backscattered laser photons in unveiling the signatures of Gauge-Mediated Supersymmetry Breaking models, with a right selectron as the next LSP. We also show how the signal can be distinguished from the Standard Model background as well as from signals of minimal supersymmetry.