There is this article that explains meiji history on pokemon cards: pokumon.com/meiji-chocolate-pokemon-promotion/
And it’s pretty complete for what I know, but it lacks one kind of meiji cards of second generation pokemons.
Some examples can be seen on ebay, here’s one:
www.ebay.it/itm/283548232623?_trkparms=ispr%3D1&hash=item4204caabaf:g:hR8AAOSwEtRdK03u&amdata=enc%3AAQAGAAAA4GCbdi0C%2BLHDrmIjC9IfDQNUSkHZhP1%2FuiDVvhwcGIg1EiALDT9KI6XFBikmfXwbWBHfjh%2BM%2BX%2BW%2Fvrzk4cjtAjs0O%2B%2FLd2HyBU7yBxQP33BfS%2FcfFqHtFVQh4y9PM%2BdKbNRa4GRlwXah4zfbCW0XYp9JEiVAUPTxnMY%2FRlq2GaCeW%2FhVi3Wuc4WeC%2BlJYV7ag9xIWzeUWQhjcVPRC4hyK2OptLvQLfMa%2Bk%2FvxUeLduCidJ76rRZ4hJIULI5xArfgBL3EiUOB1ofPPNIJeEWOvUDvqfrgUeyFgDYtUEDA6bn%7Ctkp%3ABFBMuJW4wItg
The seller has a bunch of those, but honestly I wanted to dig them and I don’t know how to start.
Somebody knows more?
EDIT: adding pics
