I got three today. I got my first egg from six 21 week old australorps on Sunday, none on Monday and three today. They were all different sizes and slightly different colors. The weights were 1.3 oz., 1.4 oz. and 1.6 oz.
Three! But I think at least one is from yesterday since we didn't get any and we found one on the floor behind the food dish (well, my 5 year old saw it - I missed it when I did my coop check earlier today).