https://www.rugbyleagueproject.org/seasons/nswrfl-1983/round-26/newtown-jets-vs-canberra-raiders/summary.html
There are 2 extra numbers I can get from this brief video, but I don't know who they are:
NJ: 17 see 0:16.
CR: 19 see 0:33.
https://www.youtube.com/watch?v=xt892sQ2cNc
Perhaps someone can identify them.
I think NJ #17 good chance it's Paul Akkary & CR #19 with that hair I'd say Sam Backo.
Sun tackle counts don't show any replacements for either team I don't have the Daily Mirror counts but I'll check next time I'm at the library hopefully next week.
I have no doubts that player in No. 19 for Canberra is Sam Backo.
-The Daily Mirror in their paper on Monday, August 29, 1983. Did not have any tackle counts for this game.
-However their Canberra Times in their report of this game on Sunday, August 28, 1983. Did say that Sam Backo came on to replace John McLeod in that game.
-I don't who the Newtown player wearing No. 17 is.
I'll add in Sam for Canberra and I have also added some notes on the issue.