Has an AFL game ever ended 137-43?
Exactly once. On August 20, 1955, Richmond beat St Kilda 137-43, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 137-43 in league history.
That makes 137-43 the 3885th most common final score out of 6,649 that have ever occurred in AFL. One point away, 138-43 has happened never and 137-44 has happened 1 times.