They measure 25.5cm (10⅛ inches) x 20cm (7⅞ inches).
Seen in opalescent, crystal, green and pink other colours likely are amber and blue.
Note the birds are about face.
These panels have been attributed to Josef Riedel Company
a Czechoslovakian company, however the maker is yet to be
A glass catalogue needs to be seen to confirm the Maker and Country of Origin, should you have or know of one please contact me.
I can be contacted at firstname.lastname@example.org