The Magnemite (53 / 102) card can be found in the Base 1st Edition set.
Recently sold 5 times and based on those sales is worth around £41.57.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £27.84 to £55.30, making it quite volatile.
This Common card was illustrated by Keiji Kinebuchi.