I went to look for the forum that I posted my ranking of George II Crowns and could not find it. I am not even sure it still is around. So I will post share my current thoughts:
From the rarest to the most common and I will group the young head and old heads together-
1751, 1735, 1734, 1736, 1750, 1732, 1739, 1741, 1743 leading to what I have experienced as the most available in terms of surviving population the 1746 LIMA.
I suspect some may argue that I have placed the 1732 too far back and that may be right. However, that was the first year of the series and it seems more than we think managed to survive.