-UPDATE-
This card is the reason I joined this forum, because I could find nothing about it and thought where better to go asking. Well…
I think I have found a version of the insert card that is still sealed. This has been a fun hunt for what was just an insignificant insert card that I found in my childhood collection. This may answer one source of where the card came from, but it also poses a lot of new questions because it is sealed in a product I never owned.
The product in question is a sealed WOTC Team Rocket 3-ring Binder. This is something I have been looking to pick up for a few months, and just by pure chance one listing I found on Facebook marketplace had the sleeves, checklist, and this card still sealed. I still can’t confirm if it is the same card because it is sealed, but would strongly assume the other side has the rocket promo.
As for the card itself, I still think there is a lot to be known about it. This will be a fantastic step into having a solid lead, as it is a sealed copy with product and we now have one confirmed source. However, the one copy I do currently have is from my childhood, and I never owned this binder and would never have traded for such a card.
As far as I can tell so far, this card is a UK exclusive. The seller I have purchased this from is UK based and it is from his childhood collection too. What is slightly strange about this insert is the contact number is the US contact number. (Although not completely unusual for the UK promos)
If we look at the legendary bird promo insert, the US version has a contact number of
1-800-877-4866 (the same as this rocket insert)
whereas the UK version of the legendary bird promo insert has the contact number
0345-12-55-99 or +44 1628 780530
Now, this still does not explain where I got my original copy of the insert from, but I have a theory. Although never owning the Team Rocket WOTC 3-ring binder, I do own two WOTC Snorlax 3-ring binders. Very similar product, but I feel if it was in there I would currently have two of the insert cards in my collection. I now believe this insert was just added into various UK products at random, perhaps for a certain factory batch to promote the Rocket Set.
For anyone still hunting or reading or who even cares I feel the best places to look would be:
-Team Rocket WOTC 3-ring binder
-UK version Pokemon the First Movie
-Team Rocket Deck Box
-Snorlax WOTC 3-ring binder
When it arrives I will give an update with some better pictures!