The post office opened in 1834 and has a recorded undated cancel. The numeral 297 is recorded from 1844. It also has and english and gaelic single ring datestamps.
Cinn Mhara Co. Na Gaillimhe/ * / Short Thick Arc
Earliest known date - 1964
Latest known date - 1989
Postmark type - Circle, Single Ring with single code at top. Date on 2 lines with Irish month. Short Arc at foot.