The Poliwhirl (38 / 102) card can be found in the Base 1st Edition set.
Recently sold 3 times and based on those sales is worth around £14.50.
Currently, there are 21 open listings for this card on ebay.
This card sells in the range of £0.01 to £29.20, making it quite volatile.
This Uncommon card was illustrated by Ken Sugimori.