I remember Avigon from when i was a kid along with Ali Baba Bramard, Belphagor (Bingo), Aiglon, Elcair, Caid etc. I think that he was imported directly into the United States from the Bahamas instead of Grosse Ille, PQ. He was considered a very moderate birth weight bull by the standards of the day. He was as easy calving as TEE Anchor aiglon or Alger bbetter performance. Many breeders like the bullscalves for their feet and legs. They are good rancher type cattle. Avigon was used by WAT-CHA farms, LOCH-LO and Pattons in Canada. Patton's had calves out of him as late as 2009; so some Avigon offspring may still roam the earth.
Ali Baba Bramard has negative birth weight EPDs with decent accuracies in the AICA summary: (-1.3 acc ,73) wiht a -14 yearling weight. The fact he may have been a hard calver back then may have reflected on the cows he was bred to since the average cow size has increased so much. My favorite Ail Bramard bull was the Edgar Phillpott half french bull SIR SANS F25, a good moderate easy calving bull for his day ( very similar to the other Edgar Phillpott bullwith ABS Crown A30).
Man have we come along was from those days...