Hi Peter,
I'm restoring a 1920s Steck at present, which will be offered for sale in due course. It's actually a pedal Duo-Art model, so a bit more versatile than other 88-note players. You mentioned that the casework isn't too important, so this one might be ideal, as the casework is reasonable without being great.
Here's a picture of it, taken under the harshest of lighting. If you're interested, please drop me a line and I'll tell you more about it.
