I had another chick from mrsmooncat hatch...it's a C3...it's blue and I'm gonna guess a LF Cochin...very beautiful almost lavender blue..and I'm gonna guess that the A1 is a Blue Andalusian? Thanks for my adorable chicks!!!
I'm sorry you didn't get more to hatch. You guessed right on the super secret code
A, A1, 1 - Blue Andalusian
C, C3, 3 - LF BBS Cochin
D, D4, 4 - Delaware
That is great you got one of the lavender(ish) chicks. I have one hen who lays that color about 1 in every 12 or so eggs. I have kept a few of those chicks to see if I can get more of them. They are very pretty.
Enjoy your chicks