Its is not stock. It has a Blizzard 1230 IV Turbo Board with FPU. It also has a Surf Squirrel SCSI card and that works as well with an old 1GB hard drive I have in an external enclosure!
I'm using a Commodore 1084 monitor and, wow, I forgot about the flickering.
I bought this 1200 in the early 90's and used it throughout that decade as my home system while in grad school.