Well,I found one underground
In sunnyshore city
You can search on youtube. that's where i found mine.search Pokemon PLatinum plate locations.
you can find a thunder stone by checking the UNDERGROUND
No
there is no such thing as a "Curse Plate."
Underground!
it's ZAP PLATE and you find it underground
Arceus (With Dragon plate)
you can get iron plate by using explorer kit
a fist plate
purple
go to veilstone and buy it in the larege pokemart