characters of the nativity scene soft rubber

I find this small group of Nativity characters are in kind of sofr rubber , never see it before . It's like a old Duck toys . I seek in web and find some informations about it . Are in production transitio when "paste" end and beginning of the Strong Plastic era .
Production of Italy probably ISAS-EUROSAS or ROVELLO PORRO .
Nice and middle quality items . Signed on the base CM and numbered .
I like becouse inusual .
Thanks
Albert