I found an 1040 STF listen on eBay under the title "Computer". It was cheap, looked grubby and figured it was worh buying to see if it could be cleaned up, recapped and moved on.
Got around to digging out the ST Monitor port to VGA cable that I put together a few years ago. Plugged it in and sure enough the STF boots to the desktop fine (mono mode, I don't have a 15KHz capable monitor for Low or Medium res. The floppy drive makes some pretty horrible sounds while booting so need to verify whether or not that works. It's been replaced in the past and the case cut, if the drive has failed it'll likely make a good candidate for a floppy replacement like a Gotek or similar.
Booting from my UltraSatan works without any issue which is good, though UIPTool with the NetUSBee doesn't seem to want to transfer anythign right now despite the web UI being visible on the network ok.
As expected the machine runs TOS 1.04, and I believe it to be quite an early model from some of my reading as it has red LEDs for both the power and the floppy drive, which look surpisingly cool to me as somebody who's always been used to the green/amber options on the ST line.
It's been an Atari heavy night as I've also been playing more with the SDrive-Max with one of my 8 bit machines, though that update will have to wait for tomorrow.
It's on my desk, not sure if video out works yet as my RGB cable needs repairing and the STF doesn't output composite/s-video over it's monitor port. Turns out it's not very grubby, but it is very yellowed. A brief test using an Atari diagnostic cart and serial cable showed the machine to be alive with good ROM/RAM.