Excited states built on the 13/21 isomers of the odd-mass 193,195,197Po isotopes have been observed via in-beam g-ray spectroscopy. The a radioactivity of these isotopes has been used to tag g -ray transitions following the AEr1164 MeV 32S reactions, where A5164, 166, 167, 168, and 170. Prompt g radiation was measured by ten Compton-suppressed Ge detectors at the target position and the Fragment Mass Analyzer was used to select evaporation residues. The results are compared with the first excited states of the heavier odd-mass polonium isotopes and of the even-mass cores
