Dating is an estimate from www.ausreprints.com.
This reads like an origin story, but it doesn't seem to have been followed up by a series.
It is unlikely (but possible) that the Australian publication was the first printing of this syndicated story. Other printings of this story included: Blue Jeans (Editorial Nueva Frontera, 1977 series) #8 (April 1978); and Grandes mitos del Oeste (Toutain Editor, 1987 series) #nn (1987)
This is a full page advertisement for Super Western Album (K. G. Murray, 1975 series).