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Some of the non-relativistic QQ/bar interaction potentials and itsisospectral partner-potentials have been employed to evaluate the masses andleptonic decay widths of Charmonium and Upsilon states. An attempt has beenmade to develop a prescription to provide a simultaneous fit to Masses andleptonic decay widths of Quarkonia. Preliminary calculation shows that theclass of isospectral-potentials corresponding to: V(r)= -(alphas/r)+ar^nappears to yield the desired results. The various associated theoretical andphenomenological issues are discussed in light of recent data. The possiblerelation with the 'Wrinkled potentials' is also discussed.

Isospectral Potentials and Quarkonia Low Energy Spectra: A Possibility of simultaneous fit to Masses and leptonic decay widths"