ANRI Ferrandiz 3" Nativity (1970's)

ANRI Ferrandiz 3" (?) Nativity. 30+ year old ANRI Juan Ferrandiz Nativity set. Hand carved in Italy, Was my Mom's and I have had since I was a child. It had been a special part of Christmas, but has remained boxed since Mom passed away 23 yrs ago. Excellent condition, nothing broken or damaged in any way. Colors still crisp. 14 pieces, plus manger.
I am trying determine correct sizing. "Joseph" figure is 3" from base to head w/perched bird a 1/4" higher. I had read that measuring "Joseph" was the determing factor. Also, is there a way to date these? Please confirm or offer opinion. And, if there are any good sources for more info on these it would be appreciated.
Thank You,
Matt