Can you post a picture of the inside, the motherboard, and the model number and date shown on the MB.
Also a pic of the label on the bottom of the case if there is one.
And maybe a close picture of the part of the badge that shows "Atari 1200".
Is the case plastic smooth, a bit rough like an 800XL
I think might be something else. . .
UPDATED: Falcon 030(FX-1)(CF int & removable SD), MSTE 4+PS3000 4160STE 2.06+HDFD STacy4-internal-USD 1040STFM+I.B.Driver-5.25"FDD 1040STF 1040ST 520ST-AdSpeed 400-48k 800+810x2+820+822+825+830+835+850, 800XL+IndusGT 600XL 130XE+XF551x2 Portfolio 1200XL APE(Warp+32in1 OS SuperVideo 2.1 256k RAMBO)+1050x2 USD'd+SIO2PC, PC1+PCH204+PCM124+PCF554x2