My wife went shopping and picked up an avocado. But it is obviously not a Hass. I am 99% sure it is a Sir Prize (which is an avocado that I really like). About twice as large as a normal Hass, but not quite as large as a Lamb. It has the funny 'ridges' on the stem end. And we just cut it open for breakfast. It has the beautiful creamy texture, medium seed for a large avocado (great flesh/seed ratio), slightly richer nutty flavor than a Hass, and no oxidation whatsoever over a 20 minute period.
The sticker did not say Sir Prize and my wife said the sign at the store was not labeled as Sir Prize.
It is too early in the season for Sir Prize avocados from California (which want to ripen around March-April if I am not mistaken), but the avocado growing region in Mexico can produce avocados nearly year round.
Has anybody heard of Mexican avocado producers growing (and exporting) anything other than Hass?
At any rate, this is exciting because Sir Prize is a superior avocado, I really love them. Not as much as my favorite Reeds, but I can still count on getting those at my local Whole Foods in September.