Unknown cows

Hi there. I have two rather old cows, neither of which have numbers or the years they were made. One is made in portugal....i wish to kniw how rare they are and if they are worth something. Or if any of you have seen these guys before. Thanks!!

They are scliech btw

The one to the left was made from 1984 - 1997.
See it HERE , but yours is one of the earlier ones

The grazing one is also , HERE, is also an older variation.

Very beautyful and interesiting

Thanks so much!!!