I also found information on another forum called victorian sweatshop? a person said: The 40F1, CC1221 and 206X13 will all work fine in a Free built Rotary sewing machine and the sister New Home Rotary machines. One old needle chart that has been around for decades lists the CC needles as the same as 206X13 and I have tried the 206X13 in the Free Westinghouse machines and they work fine.
But I'm not sure if I could use these needles on my machine? Really I'll just be sewing through cotton. So nothing too thick or heavy.