Okay, sorry for double posting, but I managed to look through the save data and recreate the Mew faithfully, complete with correct IV and EV stats, thanks to the position @Gridelin pointed out and some help from @SadisticMystic and @ZappedAmpharos on the Discord.
Here's the full Mew hex data.
And here's my recreation in Rhydon, since it was a gen 1 specific editor.
So yeah, recreated from the hex data, here's the Mew Machine from my Pokemon Blue save data!
This Mew's been through a lot. When I was a kid, one of my friends stole it through Pokemon Stadium, but th