following year, Port Adelaide requested permission to permanently wear the guernsey in all future Showdown matches, but this proposal was rejected by the AFL. Support for the guernsey remains extremely high, with the merchandise for a single game against Carlton in 2013 generating over $500,000. On 9 September 2020, it was revealed that memorabilia associated with the Prison Bar guernsey raised $2,000,000 for the club in 2020 and the Prison Bar guernsey itself was the highest selling piece of merchandise in the AFL that year. Towards the end of 2018, a group of supporters organised to push for the return of the club's traditional guernsey full time from the start of the 2020 AFL season, to coincide with the club's 150th anniversary year, and a supporter petition in 2019 calling for the reinstatement of the guernsey reached 10,000 signatures. On 29 July 2021, club president David Koch revealed that, if the club wore the Prison Bar guernsey without permission, it would be deducted four premiership points along with a fine. Uniform evolution Logo evolution Port Adelaide has adopted different insignia on several occasions throughout its history. Up until 2020, all of the club's insignia in the SANFL were designed around featuring one or multiple Magpies. The original club crest, adopted in 1900, featured a tan football and magpies perched on a gum tree with a black and white striped flag on the left and the Australian Red Ensign on the right. The ensign switched to blue sporadically through the 1910s before the flags were dropped in 1928. From 1930 until 2019, the logo always featured a dexter (left-facing) magpie, perched upon a gum branch (1930 to 1953) or a fence wire (1954 to 1974). The last Magpies-specific logo, used by the club between 1975 and 2019 in the SANFL, was situated inside a circular disc as was the case at all other SANFL clubs. It made mention of "Magpies" in the logo for the first time and was the longest standing in the club's history. Upon entering the AFL in 1997, Port were required to adopt colours and an insignia that distinguished it from , who already had the nickname of the 'Magpies'. The club designed a new logo with a silver fist clutching a lightning bolt, in front of both a Prison Bar design and teal background, showcasing both new colours the club adopted. The logo was slightly altered