The Dark Dugtrio (6 / 82) card can be found in the Team Rocket 1st Edition set.
Recently sold 6 times and based on those sales is worth around £44.40.
Currently, there are 7 open listings for this card on ebay.
This card sells in the range of £28.57 to £60.23, making it quite volatile.
This Rare Holo card was illustrated by Kagemaru Himeno.