The calico princess is a chzech project breed. they sell parent stock to hatcheries. TSC gets their birds from Hoover's, you can read about the calico princess there. I didn't have that breed, but other chzech breeds, and got eggs starting at 18 weeks! I think yours are the D459 dominant red barred hybrid project, for use in pakistan, bangladesh, ukraine, poland and slovakia ((I'm sure they'll do fine whereever you live too though). enjoy the birds!
ETA:
https://dejejvistas.lv/en/portfolio/dominant-red-barred-d-459/
is a link to info about what I'm sure are the calico princess, so they appear to be sexable by their color.