The Origin Forme Dialga VSTAR (GG68) card can be found in the Crown Zenith Galarian Gallery set.
Recently sold 20 times and based on those sales is worth around £43.00.
Currently, there are 10 open listings for this card on ebay.
This card sells in the range of £30.28 to £55.72, making it quite volatile.
This Trainer Gallery Rare Secret card was illustrated by AKIRA EGAWA.