Oh good old Battery saves... To be fair SEGA_Queen, the day your save died would have eventually come around one way or another unfortunately.
Do you still have this Mew card you mentioned as i would love to see a scan of it!

Fantastic link there. Thank you so much for sharing that website darkslime, ill be trying it shortly.

Who else remembers the websites that were up back in the day around the time Pokemon was taking off? Various cheat websites had so many fake ways to catch Mew.
One in particular included getting to the truck near the Ferry/SS whatever.
Its a very vague description, however the the truck (which is the same size as Ash) was actually there making this one seem so real... The truck image is one that always comes to mind with Pokemon along with Missingno!