Team Rocket’s Trickery has a Pichu featuring in its artwork (see www.elitefourum.com/t/up-to-20-bounty-to-find-pichu-in-non-pichu-card-artwork/28444/5). I only yesterday managed to track down an unlimited Japanese L2 copy of the card (www.mercari.com/jp/items/m82213825106) and I imagine it’s going to be a very long time before a reverse holofoil version appears.
Pokémon telephone cards have some of the most interesting artwork in the entire franchise. I only started collecting them last year and there are still multiple new cards I discover every week - I can only imagine how many must have been lost to time.