Caithness glass goblet 1978 4 calling birds Christmas Decoration

Caithness glass goblet 1978 4 calling birds Christmas Decoration
 
I guess not many people realise that Caithness could do this sort of thing. It is number 3 of 500. I imagine that they made a different glass for the Twelve Days of Christmas each year. Wouldn't it be nice to have the whole set. This is 4 calling birds and it is beautifully engraved in a typical style of the 1970's. I love it.
 
It is 18.5 cm high.