https://www.rugbyleagueproject.org/seasons/nswrfl-1975/playoff/parramatta-eels-vs-western-suburbs-magpies/summary.html
Parra: Gerard wore number 3. (see 0:03 + 0:36). There is a number 12. for Parramatta at 0:02, so I assume that is Webb. There is an 11 at 0:23, so I assume that is Charlton. At 1:15 there is a number 6, which I guess is McMartin.
WS: Tim Murphy wore number 20. (see 0:15 + 0:42 + Wests Archive about the no-try). There was a number 4. as seen at 2:06), I believe that is Parker & looking at his stats for that year, he wore number 4 all year except in the prior game which is probably an error as well.
All numbers for both sides except what changes were made above were sighted in the video including Wests replacements but not Parramatta replacement Atkins.
https://westsarchives.com.au/wp-content/uploads/2025/05/Play-off-26.8.1975-v-Parramatta.pdf
https://www.nrl.com/news/2026/07/09/eels-v-magpies---1975-play-off/